Jerked it inumurable times in public buildings but not where I could be seen. One day I spent an whole day in porn theaters sitting next to couples and taking my cock out the bottom of my shorts and jerking where they could see. Not one of the seven couples moved,complained or invited. I was so hard and full of semen. After holding it all day it was by far my biggest load ever. I really messed up a booth on the way home but I left it as a "trophy".