I have a friend with whom we have a friends with benefits relationship and he sent me a message asking us to meet up, I thought it was casual sex as usual, he asked me not to wear panties and to wear a short skirt that I have and told me to put in a butt plug, I just agreed, he said he would come and pick me up, so we could go to his house. I did what he asked, I put on the skirt and a pink heart-shaped jewel plug. After a few minutes I honk the car horn, I grab my things and go there. When I get in the car he asks me if I did what he asked. I just take the skirt and show it to him. He smiles and slaps my ass. He starts driving. After about 5 minutes I realize that we are not heading to his house, but I don't ask anything. I thought maybe he was going to buy something. After a while he goes towards the mall parking lot. I didn't understand anything. I asked him what he was doing and he said we were going to buy some things. All I could think about was that I was wearing a very short skirt and a plug in my ass and no panties. He kept letting me go first and staring at me. When we went to the second floor, he stayed further down the stairs. When we got there, he came closer and said that he could clearly see the shine of the jewel. We stayed at the mall for over 2 hours, he bought some things and we went back to the car, I was dripping wet, I found the whole situation very exciting. Inside the car, he started touching my pussy, then he took his dick out and asked me to suck it, so I did, after a few minutes he came in my mouth, I swallowed and got back up, when I looked at the road again it wasn't the direction of his house, at the same moment he turned a street and I saw that we were going to his mother's house. I had known her for over a year, but I had never been close to her, with such short clothes, using a plug and with her mouth dirty with cum.