This was my first locker room experience alone
One day after school I became particularly horny and wanted to jerk off. After reading some of the stories on this site about locker room fun, I thought that I would fulfil one of my fantasies about locker rooms. I wandered over to the locker room which was open because there were after school sports going on. I checked to see if anyone was inside and no one was so I began to search the lost and found for some guy's underwear (particularly boxer briefs, because I have this thing about underwear). I found a few abandoned pairs but nothing too exciting. I decided to search the lockers for anything interesting.
As I quickly searched the rows I found a pair of grey blue boxer briefs that were soaking wet. I kept looking but did not find anything else, so I decided to try them on and look at my package in the tight wet boxer briefs. I went into the bathroom which had stalls and took off my pants and boxers and slipped the wet boxer briefs on. They did not look like much because they were a size too big for me, but I began to get a boner due to the fact that I was in some guy's underwear. I checked to see if anyone was coming and slipped the boxer briefs down and began to stroke my penis.
I went to the sinks and got some soap and lathered up my hand and began to jack off looking at myself in the mirror in another guy's underwear. I quickly took off my shirt and had nothing on but my socks and the boxer briefs. I quickly exploded into my hand and thought that I would leave the guy a little surprise and cleaned up the mess with his boxer briefs. I quickly got dressed and put the underwear back and left. Though this was an experience I would never forget, I wish I had found out whose underwear I had jacked off in.