To get smacked down so hard you never get back up again. Usually used in non-digital esports, such as Magic: The Gathering, Yu-Gi-Oh!, or Pokemon. This term originates from someone trying to look at the round pairings and the neckbeard
in front of them turns quickly, smashing them with a backpack full of nerd-cardboard.
I backpacked that mother fucker in round 3; he quit the whole damned tournament and sold his deck to the vendors.