a 321 - Used in beer pong when you’re down to six cups and you want

Used in beer pong when you’re down to six cups and you want them arranged like a pyramid, but you’re too lazy to do it right.

We set up 321 and then lost the game because we’re all idiots.

He did a 321 and then spilled all the beer.

They made a 321 and then it collapsed like a bad relationship.