Man, do teens love a challenge.

The mannequin challenge is currently dominating the internet, but a new, well, challenger, is breathing down its neck. Dubbed "the backpack challenge," it's quite simple, if not slightly painful.

Basically, one person runs between two rows of people armed with backpacks that they use to hit him or her. It's almost like sanctioned bullying.

Take a look for yourself and decide if you have the physical wherewithal and mental fortitude to withstand the pummeling involved. If this catches on, perhaps some enterprising company will sell armor to protect the brave (or crazy) souls who take part. Note the NSFW language in some of the videos below, too.