it stands for "Sissy Boys Are Back In Town" and originated from "C M" when he heard some sort of commercial or something. To him and his friends it is used to refer to a couple of losers that they know but it may be used freely to describe anything that lamepeople think are cool.
To trick or to prank in an immoral way; or just to shabutacock. She butt a cock
Steve: My friend shabutacocked me so hard.
Mr. Pager: How what happened?
Steve: When I fell asleep on a park bench, she tied my shoe to the leg, and lit a firework off right behind. I woke up, tried to run, then fell flat on my face.
Mr. Pager: That’s horrible, we got to shabutacock her back hard