This just happened
My sister just asked me if she could try to make me cum because she wanted to practice for her her boyfriend. She's 16 and has an awesome body. She's jacked me off before and started by getting a little lube on my five inch dick. She then started rubbing faster and faster but stopped right when I was about to cum. She did this about five times and I asked her what she was doing and that it was starting to hurt. She told me to trust her and did it again and unveiled her boobs. She told me not to hold back or wait for a tissue. She said to come when I needed. I always loved seeing her breasts which were perfect.
She did her technique three more times and then I told her I couldn't take it. We had been practising for two hours and my dick was raw and she had used so much lube. She told me this was it and started pumping so hard. I started to clench since it felt like I was going to pee but just relaxed and then it happened. I shot out a stream of cum that hit her face and then another into her breasts and several more into her stomach. I must've shot at least 10 times. My dick then started oozing cum and she didn't stop. I told her it hurt but she kept going. I then built up again and shot cum all over myself. There was so much cum everywhere. She started to lick it off me and asked how I enjoyed it. She then told me she wasn't practising for her boyfriend at all since she had already made him cum even more than I had. She said she loves the smell and taste of it and loves when it hits her body. We then went to shower and fell asleep.