But then, things take a turn for the worse. Who could have foreseen... the office air horn prank? Not this guy, that's for sure. It's always hilarious when life imitates cartoons. Seriously ...

But there are times when a prank completely falls flat. Exhibit "A" is the air mattress prank from this video: It's easy to see why the prankster thought it'd be a good idea. But, instead of ...

A French TV show host was left shocked and embarrassed after a guest jokingly lifted her skirt while live on TV ... was left open-mouthed by the prank and quickly pulled her dress back down.