I heard this from a truck driver today...
Two teachers and a bunch of little kiddos from school went on a field trip to the horse race track.
Upon arriving a majority of the kids had to go pee.
One of the teachers took all the girls, one took all the boys.
Well the lady teacher who took all the boys had a problem ; She had to hold the boys up to the urinal AND hold their peckers while they pissed so they wouldn't piss all over the damn walls.
Well half way through she picked up a little one to piss in the urinal and upon grabbing his pecker she noticed he was quite "large".
She said " Oh my, you are a big boy, aren't you!"
to which he replied "thanks lady, I'll be riding Sea Bisquit in the seventh