This happened a couple of weeks ago...
My cousin's girlfriend was having a baby shower for family and close friends. The shower was fun, but messy, so I offered to stay after and help clean up. While we were cleaning up we were talking about her pregnancy, and how it was going. She was dismissing some myths, and telling me other interesting facts...she started telling me that she had become very horny since she had become pregnant. I jokingly asked her if Mike was able to keep up, looking at me with all seriousness she said 'no.' I looked at her and asked her how she took care of her self then. She said she couldn't, because she couldn't reach. I asked her if she wanted help. She looked at her watch, Mike was due home, but not for another hour or so, so we had to be fast.
We moved to her bedroom, and began kissing. I had been with girls before, but I had never been with someone who was pregnant. She was getting very turned on by this, as I was. I reached down to her pants, and undid the button. I slipped my hand into her pants and grabbed her butt. Meanwhile, she was removing my shirt and bra. She began to suck my tits, while I was moving towards her wet pussy. I removed her pants, and started fingering her pussy. I reached up and took off her shirt, her belly was huge, but really turned me on. I told her this, and she moved down from my tits to my pants. I was really wet when she finally got her fingers in my pussy.
I continued to rub her pussy, and pinch her clit. She started to cum really quickly, and after she came she turned around to focus on my pussy. As she rubbed my pussy and clit, I sucked on her plump tits. I was really close, when she stopped, she looked at me and told me Mike was home. We looked at each other, and we both knew that we had been caught. We knew that we couldn't get cleaned up quickly enough, so we just continued what we were doing. Knowing that my cousin could walk in at any second was almost sending me over the edge. When the knob started to turn, I came so hard spurting cum for the first time. Needless to say what happened next is a story for a different site.