Abbreviation for "like back." Most commonly seen in the comments section on celebrity Instagram accounts, put there by their delusional fans who think they can actually get a like back/get noticed. Also used by those annoying Instagram "models" in an attempt to gain new followers and/or more likes on their FitTea promotional posts.
Kardashian Fan #1: Omg! I just commented "lb" on Kylie's IG, I really hope she notices me!
Regular Person: Shut the fuck up.
A kitty nigga. he's bick nice and good-hearted. He'll take yo girl with his gorgeous looks, and make you sad. If he yo nigga, he got you back no matter what. You can depend on him, for anything. When it comes to fights, he got hands don't sleep on him, or he'll make you sleep.