One morning a week we have football training. I normally bat off in the morning so I can't really do this when we have football.
One day when I was walking to the showers in my cock jocks I started to get a bit hard. I was waiting for Joe to finish in the shower and I was still feeling the urge. When Joe came out he looked quite relaxed and relieved. When I went in there I could see just a bit of cum on the wall. I took my cock jock off and my five inch cock was now at it's full seven inches.
I thought there is only one way to stop this and I quickly batted off. I came all in my hand and washed it off. I put my boxers on and walked out to continue to get changed. I always bat off in there now because I know other people do it in there. They even do it when we finish late and have to double up and even though mine is quite big it is average here.
If anyone wants to hear more leave a comment and I will put more stories in.