What my 63-year old friend Charlie proposed was unusual, a bit risky, but insanely hot. He asked me to be his "sugar baby" for a day. He was delicate about it.

"You're an educated, hard-working, ambitious young professional," he said, "but given what you've told me about your...interests, how about a little role play?"

I thought about it and said yes. We talked through our limits and what to do if things got uncomfortable. He was direct about what he wanted, clearly not his first time doing this. One of the big points was about gifts. Being a "sugar baby" usually means accepting gifts from your "daddy." We argued about it a lot. I didn't want anything expensive. He wanted to buy me high-end clothes as part of the game. We finally compromised: he could buy me clothes, but I'd give them back for him to return.

He wanted to walk me through his plans for the day. I told him it would be more exciting if I didn’t know, as long as everything stayed within our agreed limits.

"Deal," he said. "But be ready at 7 am. We'll start the day at the gym."

I was surprised but intrigued. We agreed to meet in a day.

The day came, and I woke up early to get ready. I packed a red sports bra and black leggings. After a shower, I pulled my hair into a high ponytail and put on minimal makeup. I packed my gym bag and headed to the hotel's lobby to meet Charlie. I enjoyed the tingling anticipation of the adventure.

Charlie was already there, looking sharp in navy blue pants and a light grey shirt.

"Good morning, Daddy!" I greeted him with a hug.

He kissed me on the lips.

"Morning, Hot Stuff"

This time, there was no driver. Charlie was driving himself. We arrived at the gym in an upscale building, and it was completely empty. After changing into my gym clothes, I came out of the locker room and saw Charlie doing warm up exercises.

Charlie started off with jumping jacks and pushups. I followed his lead. I had to push myself to keep up with him even though I was 40 years younger. I could feel the adrenaline flowing through my body. We took a quick water break and headed over to the treadmills section.

Charlie was in great shape. He was running fast, and his treadmill was on an incline. After about 10 minutes, he looked energized.

I was a bit tired, but the run was refreshing. Charlie led me to the mat area. "I’m doing crunches now," he said. "I need your help, Hot Stuff."

He lay on the mat and stretched his legs.

"Hey, sit here," he waved at me and pointed to his thighs.

"But Daddy," I said, "You need to bend you legs during crunches..."

"Don't worry, Hot Stuff," he responded.

I positioned myself, straddling his legs and pressing on his thighs.

"I want you to remove your bra, Hot Stuff," he said.

I obeyed, unclasped my bra and tossed it to the side.

"Good girl," he said. "Now I need you to hold my knees down and press on my thighs to give me resistance."

I did as I was told. He began to do crunches.

As he began his exercise, his face was coming up to my chest with each lift. And with every rep, he extended his tongue licking my nipples, tracing his tongue around the edges. He did not rush it, his tongue would roll out, caressing the tip of each nipple. Then he would swirl around the areola and make two or three broad strokes.

"Daddy, you're so naughty!" I giggled nervously.

I was embarrassed and turned on at the same time. Gradually, with each lift, my body began to respond. I felt that that unmistakable hardness in my nipples, as if someone added more weight to them, but also made them more sensitive. Each flick and swirl was sending more heat down to my lower abdomen. I felt a slick warmth spreading between her legs under her workout shorts. Not wetness yet, but that warm feeling when you know for sure that the wetness would follow.

Almost instinctively, I started to rock my hips against Charlie’s thighs. With each grind, I felt a delicious pressure against my clit.

"Come on, keep up, Daddy," I taunted him.

But he was getting tired. His movements began to slow. His breath was coming heavier with each crunch.

"You're not giving up on me now, are you, Daddy?" I taunted him more. My tone was full of mock disappointment. I did not know I had such a bratty persona in me. But he had told me previously that he liked that, so I played my part. But I was surprised at how natural it felt.

"I thought you were tougher than this," I chided and started grinding down on him harder. As I was grinding, I reached up with one hand to tweak my already stiff nipples. I pinched and rolled them between my fingers.

"Oh, just look at what you've made me do, Daddy" I purred down at Charlie,"Here I am, having to take care of myself."

As I was saying this, I felt a strange combination of shame and shamelessness. The gym was empty, but it was spacious and sunny. I had a strong feeling that we were having our naughty game in a public place. I felt like I was at the center of public attention, even though there was no public. I felt powerful and powerless at the same time. It's hard to explain.

Anyway, Charlie had some rest and did two more iterations of the crunches. Finally, he lay down exhausted. I felt like he needed some encouragement. I leaned in.

"You're so strong. Daddy," I said. I ran my palm over his chest.

After he took some rest, he got up and led me to the deadlift section.

"It's your turn now!" he announced. He put his palm on my buttocks.

"Daddy, what are you doing?" I asked in surprised tone.

"I'm doing whatever I want, Hot Stuff." Charlie laughed, "You need to lose these leggings... And your panties as well."

I removed my remaining clothes. I felt nervous in that brightly lit part of the gym surrounded by mirrors. But i had to continue the workout. I set up the barbell with weights that are not too heavy. I was expecting Charlie to join but he reclined in a massage chair instead.

"Wow, that ass is a masterpiece," he commented.

His chair was behind me, so he saw my ass. He also so my face reflected in the gym mirror. I saw him in the mirror as well. I felt exposed. I blushed. He laughed.

I started my deadlifts, lifting the barbell and then lowering it back to the ground. Each time I bent and straightened, I felt more aware of my naked body. Charlie watched me intently and then he took his cock out and started stroking it.

"Daddy..." I said.

"Go on, Hot Stuff, do not pay attention to me"

But it was hard not to pay attention to him. He was relaxed in the massage chair, fully enjoying the view. I felt like I was on stage, like I was the main performer, even a stripper. I continued deadlifting, trying to concentrate on the exercise. Charlie was stroking his cock in gentle way; he did not want to finish. As embarrassed as I was, I felt strangely empowered by Charlie's desire.

After the deadlifts, Charlie announced that he needed me to motivate him for the exercise again. He made me sit on the bench and started squatting in front of me. Each time he would squat down, I had to reach out to caress him, running my hands over his thighs. It was not too complicated for me, but I wanted to approach the task with the creativity Charlie deserved.

I started at his knees with light touches. With each squat, my hands became bolder. My fingers traced the outlines of his muscular thighs and then moved higher, teasing the edge of his shorts, and then getting closer and closer to his groin with each repetition.

"Amazing job, Hot Stuff!" he praised me. I felt proud.

For the final exercise, Charlie led me again to the mats section. He lay on his back on the mat and told me to perform the plank with him beneath me. I got down on my knees, gently straddled him and planted my hands on the mat beside his shoulders. Then I carefully lifted myself into a straight, rigid plank position. My body was parallel to his.

Charlie had no intention to be still. His hands began to explore my body. I felt his palms, gliding over my thighs, my back, my pelvic bone. Finally, they reached my pussy.

I bit my lip, keeping my eyes forward, focused in the spot of the wall.

I felt how his fingers slipped past my folds and started stroking my clit. His movements were sending shockwaves through my lower abdomen. With each of his strokes, my muscles strained even more. My body was trembling, my arms quaking from both the effort of holding the plank and the waves of arousal.

"Please, Daddy," I begged, "Let's do it later. I can't now... It's too hard...."

He grinned and dipped his index finger into my nub.

"I'm not asking you for permission, Hot Stuff,” he said. coldly

He abruptly slid his finger deeper into my vagina.

I gasped.

He started alternating between rubbing my clit and penetrating me. The rhythm was driving me wild. His other hand traveled up to caress my abdomen and then to my breasts, pinching my nipples.

I was pushed to the limit. I could not hold back any longer and collapsed onto him.

I was lying panting heavily, sprawled across him. He gently caressed me.

But he did not allow me to rest. Instead, he shifted quickly, positioning me beneath him, yanked down his shorts, and pushed his cock into my vagina.

He was aggressive.

His pace was unrelenting from the start. Each thrust was deep and rapid. I moaned. His movement were sending shocks of pleasure, but he was so ferocious that each of such waves was also mixed with a tinge of pain. I was already wet, and so he was entering me with ease. Yet the force with which he entered me made it feel almost punishing.

With a few hard thrusts, he groaned loudly, and his body tensed as he reached his orgasm. He stayed deep inside me releasing pulse after pulse of his cum into me. I felt the warmth feeling me up. He was breathing heavily into my ear.

After resting for a moment, Charlie rolled off me and lay beside me on the mat. We both were catching our breath,

"You really know how to work out, Daddy," I said teasingly.

"Damn, Hot Stuff..." he replied.

After we rested for a bit, Charlie led me to the spa area. The room was filled with the scent of eucalyptus and dimly lit, with a calm atmosphere. We relaxed in a large, steamy Jacuzzi. The warm water surrounded us, and the jets massaged our tired muscles.

After the Jacuzzi session, we dressed up and were ready for the rest of the day.

"Brunch time!" Charlie announced.

Only then I realized how hungry I was.