LMMFBO 

Imagine an ironic mashup of LMBO + LMMFAO.

Friend1: *sees something hilarious*
Friend1: Sends to Friend2 (DM, SMS, carrier pigeon, etc)
Friend2: "LMMFBO!"

LMMFBO by ImperialFleet1 February 17, 2023

LMFBOAT 

L - laughing

M - my
F - fookin
B - booty
O - off
A - at
T - that

Pronounced like "limf boat" in speech.

Person 1: "Yo! Did you hear about that person that's so concerned about being stalked that they only put their initials on their social media page? I found their LinkedIn profile!"
Person 2: "LMFBOAT! What a scrub!"

LMFBOAT by Xx_bigbrainboi_xX December 27, 2020

LMMFAOWWDAACMBALAK 

Laughing my motherfucking ass off while watching drama alert and clenching my ballsack and looking at keemstar

Keemstar: LETS GET ROOOOOOOIGHT INTO THE NEWS!
Guy: LMMFAOWWDAACMBALAK

LMMFAOWWDAACMBALAK by CurtisDoingCrack May 17, 2016

LMMFAO 

Laugh My Mother Fucking Ass Off - Normally used online when one laughs so hard s/he has to use acronyms... Associated with lmao and rofl...

Mel: OMFG, guess what!!!
Joe: What?!!?!??!
Mel: My cat fell into the toilet. :(
Joe: LMMFAO!!!

LMMFAO by Melfina March 26, 2004

lmmfaosfhibmmff 

laugh my mother fucking ass off so fucking hard i broke my mother fucking foot.

That was hilarious! lmmfaosfhibmmff!

lmmfaosfhibmmff by Chunkymanwithabs47 October 20, 2010

lmmfao 

Laugh My Mother Fucking Ass Off. Similar to "lmao," or "lmfao," but instead of "Laugh My Ass Off," or "Laugh My Fucking Ass Off," it adds the impact with "Mother".

Mike: "So the dog walked itself home, ate a pizza, and took a nap."

Joe: "LMAO!"

Peter: "LMFAO!"

Scott: "No dudes, LMMFAO."

lmmfao by #1newboyzgroupie August 6, 2011

LMFBO 

Acronym: Laughing My Freaking Butt Off

Definition: An expression of extreme hysteria. Like LMBO, it is a common reaction to something funny.

Priscilla: "I'm hungry."
Percy: "Hi Hungry, I'm Percy."
Priscilla: "LMFBO!"

LMFBO by mu_ September 5, 2019