Farting!
As I often mention, I work part-time in a video store. Quite often I'll squeak out a few farts while putting DVDs back on shelves, with the fact that customers probably walk into my stink filling me with joy as I'm being emptied of gas. One night I popped one out near a boy of around 5 and his dad. After I walked away I saw the dad give a quick sniff and begin asking his son about it.

"Did you fart?"
"No."
"Come on now, don't lie to me."
"Serious Dad, I didn't."
"You sure?"
(almost crying) "Yes!"
(clearly not believing) "OK..."

Felt a little bad for the kid, but at least the dad found it funny. Not as much as me however.
(ElGranto, Sat 5 Jun 2010, 4:25, Reply)