WATCH: Snowball Prank Backfires on Teens

Never prank a city worker with a water hose… or you could end up being the one who gets wet.

A couple of teens in London learned the lesson the hard way.

They apparently thought it would be funny to throw snowballs at some workers cleaning a bridge.

But it was the workers who would get the last laugh, after they retaliated with a water hose.