Whenever I go in to the men's toilets to take a leak I always use the urinals. Having quite a big dick for my age I'm not shy (haha). So after I piss I just stand there alone holding my dick waiting for another guy to come in so he can see me shaking the drips away! It always catches there attention.
One day a guy commented on my size, it got me so hot so I rammed my cock back in to my boxers, and couldn't wait to get home and rub one out!