(M54) Unexpected piss play
My college GF had a really mean and evil sister. She wrecked my GFs car, stole money and clothes from her mom and my GF, lied about all kinds of shit, and basically stirred up trouble at every opportunity.
She eventually got kicked out of the house my GF shared w her Mom and had to go stay at the dads studio apartment. One weekend her dad and the sister were out of town so we go over to the apartment to watch a movie and drink beer. We lose interest in the movie and start messing around. Since it was a small 1 bedroom place the evil sister slept on this shitty thin twin bed sized futon mattress in the living room. We move off the couch and onto this mattress, we do a little 69, I spread her open and lick her wet pussy and then I start fucking her missionary. I’m pounding away and all that beer comes back to haunt me, I tell her I gotta stop and go take a leak, my bladder is full and it’s killing me.