Many years ago

This happened several years ago, but remember it like yesterday. It was me, my then girlfriend, our four month old daughter, my four year old son, and one of my best friends that I grew up with. It was a hot summer day and we had been drinking and decided to stop by the river and take a swim. Since we didn't have any bathing suits with us we just stripped down to our underwear and went swimming. Girlfriend wet topless and let her nice big titties hang out. Me and my buddy are both groping and grabbing her. When we got out of the water my girlfriend noticed that my buddy had a hard on and his cock was huge, So I suggested that we just strip down and let our underwear dry off, nobody disagreed. After about an hour and several shots of liquor, my buddy got up to go take a piss and that's when my girlfriend asked if she I would mind if she fucked my buddy. I kinda laughed and told her that I wondered when she was going to ask, and if she could handle what he had, like I said, this guy was very well hung, at least twice the size of mine. She asked if she could have a couple of minutes alone with him, so when he got back I got up to go take a piss. When I got back they were already kissing and playing with each other. It took her a little while to fit his huge cock inside her but once she did and they got the right rhythm going she was moaning and yelping. Once she started cumming she couldn't stop. She had got the attention of several people that were floating down the river and they were rooting my buddy on. So I get up and go over and stick my cock in her mouth and she starts to damn near swallow my whole cock down her throat. I shot my load down her throat and about ten minutes later my buddy shoots his load in her pussy. When he climbed off of her she had what seemed like gallons of cum rolling out of her pussy. So she gets up, takes another shot and grabs my sons hand, he had been sitting in the chair I had been in watching us, and takes him down to the river so she can wash off. With the guys out on the river hollering the whole time. When she got back up to the car it was getting about dusk so we decided it was time to go home. My buddy and I had put our shorts back on but my girlfriend climbed in the front between us still nude. When we get started she asked if she could fuck him again in the car while we were driving. The thought turned me on so I told her to go for it. So she pulls his cock out and climbs on top ot it and slides down on it with no problem this time. So here we are driving down the road just after dark with my girlfriend nude fucking my buddy in the passengers seat with my son in the back seat and our daughter asleep in her car seat in the back. We have to drive through town to get home, so I made sure I took the longest way around once we got in town so we could stop at the traffic lights. Anybody that pulled up on the passengers side of the car got a great view of my girlfriends titties bouncing up and down as she was riding my buddy. I tried to make sure that they were seen by as many people as I could on the way home. When we pulled into the parking lot of the apartment building that we lived in there were a few people out on their decks and could see us pull in. So I made sure I parked were they could see what was going on. By this time my girlfriend was pretty much drunk enough that she really didn't care who saw her. So she is sitting there fucking him while I take the k**s up and put them to bed. I go out on the balcony and watch them for a while myself. She had an orgasm that was loud enough that several others had went to look out and see what was going on. That's when she got up and without putting any clothes on she takes him by the hand and walks him up to our apartment. My buddy ended up staying the rest of the night.