Lmbo 

Lmbo is a more appropriate version of Lmao for people who want to kiss their mother with a clean mouth. It stands for "Laughing my butt off", "Laughing my bones off", "Last mountain bird observatory", "Little mister Bobby Opal", or "Lying my behind off".

"Lol u r SO funny"
"Lmbo, I know!"

Lmbo by Definitions@123 April 3, 2022

lmbo 

Laughing my butt off. A less dramatic version of LMAO.

I fell off the cliff and died.
LMBO!

lmbo by Kevin January 18, 2005

LMBO 

alternate way of expressing extreme laughter, to the extent where ones burca falls from ones head. Not enough for one to 'laugh ones ass off', but enough for a burca to fall.

Sarah - "Tacco Tacco BURRITO!!"
Roxy - "That's so funny LMBO!!"

LMBO by ghandishoes June 29, 2010

lmbo 

lmbo: samething as lmao unless the b is used differently. Ex. lmbo: laugh my boobs off, laugh my balls off or just laugh my butt off

person1:omg i fell down the stairs person2:lmbo

lmbo by Independent1011 January 14, 2010

lmbo 

a healthy alternative to lmao/lmfao to use in schools in case the teacher finds out you're passing notes and reads it to the whole class

claire: I am having my period.
abby: lmbo

lmbo by abbydskinnyass January 6, 2009

lmbo 

Laughing My Butt Off, used in IM conversations.

Pete: Did you hear the joke of the llama and the kangaroo?
Rose: Yeah, I did, lmbo

lmbo by Nanda June 29, 2006

lmbo 

laughing my butt off. another way of saying lmao (laughing my ass off) w/o swearing.

guy: he's trying to steal my woman.

guy 2: lmbo

lmbo by Christina Freed August 27, 2008