Well, I don't have a cawk but I gave birth to one. I actually have a funny zipper story.
When my son was very young, about six or so, he asked me one morning why we wear underwear. I honestly drew a blank at the time, he caught me flatfooted and mornings were crazy in those days. Anyway, at the time he was going to summer camp at the YMCA. One afternoon later that same week I picked him up from camp and as we were walking away from the Y we're talking about his day. THIS conversation I will remember vividly until my dying day:
Me: "Did you have fun today, son?"
Him: *Shrug* "Some kid flushed my underwear down the toilet."
Me: "What?! Why did he do that?"
Him: *Shrug* "I dunno." I note my child is being uncharacteristically thoughtful.
Me: "You okay son?"
Him: "Yeah." more silence then very quietly and seriously "I know why we wear underwear now."
Me: "Caught it in the zipper, huh?"
Him: "Yep."