This is a true story that happened to me.
One day on the bus ride home from school I was really horny and needed to jack off. I put my ruck sack on my lap and started to stroke my cock through my trousers while still talking to my friends. I orgasmed really quickly and only managed to let out a little shake. I could feel cum in my trousers. I thought I had gotten away with it but as I looked behind me I saw a lad in my year stroking himself.