In FPS games, humiliation is doled out after you kill your opponent, stand over their body and squat repeatedly. This is called a teabag

In Titanfall, you can do this with your Titan, which is much, much more satisfying.

It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.

When you teabag someone in Titanfall. Can be titan-on-human, human-on-titan, or titan-on-titan. Human-on-human teabagging is frowned upon, because it's not sufficiently epic. Spelled with either a space or a hyphen, because titanbag looks like tit-an-bag, which sounds like a sex thing.