In the office I work in we only have one bathroom. It is a unisex with only a toilet. One day I came in after lunch and went in to pee. As I was unzipping someone was knocking and I said I'm in here. Then I heard Marcy yell she needed to go. The next thing I know the door is opened and Marcy walks in. She is watching me pee and tells me she needs to go. I tell her to shut the door and I'll be done in a minute. I am still going and Marcy starts to remove her shoes, pants and underwear and steps one leg over the toilet and tells me to aim my pee between her legs.
I do and then hear her start to pee. Well I finish but the second it happened I start to get hard and Marcy laughs and tells me what a nice dick I have. She then starts to rub my dick and soon she is masturbating me. I am close to coming and tell her and she grabs some toilet paper and I shoot my cum in it. Marcy then gets up and I start to rub her. She looks at me and I tell her fair is fair and start to masturbate her. In a few minutes I find her clit and start to rub it and in no time she has an orgasm and thanks me.