I (30s M) recently started going to a new gym. A few weeks ago, I'm showering when I notice a very toned, smooth guy walking towards the showers completely naked and not hiding it. I normally don't look at other guys dicks in the locker room, they're usually small, shriveled up, and obscured by a beer belly however this guy was different. He had washboard abs, and a thick penis that swayed gently when he walked. The top of his head peaked out of his ample foreskin.

I must have stared too long because he noticed me and boldly walked directly into my stall. I halfheartedly asked him what he was doing in the stall with me and told him he had the wrong idea but he just laughed and ignored me because my penis was hard as a rock. He lathered us both up with soap and started jerking us both by inserting my penis inside his foreskin. My mind was racing and my heart was beating out of my chest.

After a few minutes, I tried leaving because I was nervous about getting caught, but he firmly held me in place from behind and started rubbing his thick penis against my ass crack. I tried to look back so I could see his dick again, but he firmly held me in place and instructed me to keep looking forward. Then he lubed himself up with conditioner, fingered some in my hole, and forced himself inside me. It really hurt at first, but he was slow at first and I adjusted to his size. After a few minutes he started thrusting harder, deep into me while covering my mouth and manhandling me. I suddenly felt more pressure building and felt my orgasm coming. My hole clamped hard around his shaft, and I started shooting cum uncontrolably. I had never shot so much in my life. This flipped a switch in him and he went super deep and released inside me. He pulled out, and let me go, which literally made me fall down because my legs were shaking so much from my own orgasm.

As he's standing over me, dick dripping, he tells me to push his cum out. I start pushing, but suddenly feel the rush of cum, followed by the shit I had been holding during my workout. He laughs, calls me a nasty slut, and proceeds to pee all over me and leaves. It all happened so fast but I loved it!