sharing a bathroom with stepmom and masturbating together ends in anal sex and creampie

It was the Fourth of July and we had to wash off after the pool and we had to share a bathroom to do it. I thought it would be ok if we left our bathing suits on but that didn't stop either one of us from masturbating. I noticed him watching me and it seemed like we might as well just use each other for sex and get on with it. I was super surprised when he put his dick in my butt hole but I didn't really mind.