I'm in my late 20's and was staying in Wales and very bored on a work visit. I decided to take a trip along the A449 passing a few good laybys and eventually ending up at the Monmouthshire public toilets which are 24 hours and a favourite place for gay sex. There were a few cars parkied up but as usual not doing anything just sitting with their engines on, I went into the toilets for a pee and a guy got out of his hire van and went into the cubicle, I had a quick peek then went and stodd in the next cubicle wanking. Build uop the courage to wander into the other one with my cock out! he asked what I was into and I said "just wanking" with him saying "I like fucking, have you ever tried it?" I played with his cock and dropped my trousers to the floor and turned around and told him to put his cock on my arse. I hear someone come in for a pee which made me horny and I give out a little yelp of excitement, I told the guy in the cubicle to und the back of the loo's where it's dark!he followed me round and I bent over and he put some lube on my arse and pinned me up against the wall trying to get his cock in my very tight hole, I grabbed hold of a railing and told him to fuck me.... I felt his cock slide into my arse which felt amazing and I called him daddy which was a very big turn on for us both. After about 5 minutes of him fucking me quiet hard he shot his load in my arse which was hot and I quickly pulled up my trousers and got back in my car. He drove off and I waited and wanked myself silly knowing I had his creamy load in my arse.