smbu 

On the official Warrior Cat Forums, a SMBU is a Super Message Board User. These users are possibly pedophilic individuals who enjoy wasting their time on message boards with hundreds of thousands of post talking to barely pubescent children.

Look, look at that SMBU. I bet she's some fat fuck that eats cheetos all day.

smbu by lolyoloswag420 February 3, 2014

SMBU 

SMBU or Suck My Bargaining Unit is when your boss or some dipshit tries to tell you your business, but you know the union has your back and you have the spirit of Lucy Parsons and Eugene Debs in you.

Boss
"Hey you can't use your phone on the job"

Worker
"Oh yeah? Where does it say that in the contract? That's what I thought, SMBU Brad!

SMBU by BossesWifeLuvsMyBargainingUnit October 10, 2021