EMFB 

internet acronym slang; stands for Eat My Fuckin' Butt

all you n00bZ in this thread can EMFB or GTFO

EMFB by Sweet Daddy Patty January 26, 2010

EMFB 

It means "Eat My Fucking Beans"

Texting
Guy1: Fuck you man
Guy2: EMFB
Guy1: Woah calm down

EMFB by Colgayte September 27, 2018

emfbo 

"eat my f*ckin' butt out"

said when doing something wrong and have no defense, or as "go to h*ll"

Hey, man, don't eat my stuff from the 'fridge. Saw you getting into my stuff, last night.

So what. Emfbo.

emfbo by jjmmjj57 January 11, 2004