rbs 

rbs is an acronym for resting bitch face. everyone, usually in the female category, has a resting bitch face. It occurs when the female has no expression or particular thought, such as staring off into space, and gives the look, "I'll murder your first born child if you cross me" and/or several other threats similar. Even if it is the nicest person you know, they can have a bitch face.

Kelly was blankly staring at the teacher, but with her severe rbs she looked like she wanted to rip his throat out.

Jack was waiting in line mindlessly while her friends waited for her a few steps back as she gave a serious rbs and looked close to slapping the shit out of someone

rbs by smashing&dashing August 29, 2014

rbs 

rbs is an acronym for resting bitch face. everyone, usually in the female category, has a resting bitch face. It occurs when the female has no expression or particular thought, such as staring off into space, and gives the look, "I'll murder your first born child if you cross me" and/or several other threats similar. Even if it is the nicest person you know, they can have a bitch face.

Kelly was blankly staring at the teacher, but with her severe rbs she looked like she wanted to rip his throat out.

Jack was waiting in line mindlessly while her friends waited for her a few steps back as she gave a serious rbs and looked close to slapping the shit out of someone

rbs by smashing&dashing August 29, 2014

RBs 

Razor boogies. Sharp boogies that feel like you have a razorblade shoved up your nose.

Do you have a tissue? I've got an RB that's killing me.

RBs by Alex P. Keaton May 10, 2004

RBS 

The most attractive person Ever! The best person on the planet. Also a very smart girl with so much potential.

RBS is the best and I love her very much

RBS by SB March 8, 2004

RBS 

A common nickname for "Robert" derived from the nickname "Robs" with the "O" omitted.

A: Where is RBS?
B: He's walking the dog.

RBS by RBS January 10, 2004

RBS 

Random Boner Syndrome

Guy 1: Hey why can't you get up? Guy 2: You know why.

Guy 1: RBS.

RBS by thick soup May 20, 2015

RBS 

Random boner syndrome

Dude, I'm not gay but at the gym I get a boner, I think I might have RBS

RBS by Anonymousness is key February 12, 2018