How to pull a door tug of war prank

Pranks are easy to do, and this prank is no exception, but that doesn't mean they aren't funny as hell. Check out this video tutorial to learn how to pull a door tug of war prank in any environment, preferably the dorm room setting. It's a really simple prank, where you simply tie string to do different, close by doorknobs, knock on both doors, then watch as they tug away at each other. Hilarious! See for yourself.