ROTFCMBO

Rolling on the floor, cumming my balls out.

Sarah: When Amir is chatting online, and he finds something funny, what does he type?
Jake: It's not LOL. ROTFCMBO?
Amir: That is correct!
Sarah: And for a bonus point, what does that stand for?
Jake: I don't want the bonus point... I...
Amir: Rolling On The Floor, Cumming My Balls Out.

ROTFCMBO by Jope Blumenfeld January 1, 2011

ROTFLMBOASIPBJTATMMLHCISR 

Rolling On The Floor Laughing My Butt Off And Singing Its Peanut Butter Jelly Time And That Makes Me Laugh Harder Cause It's So Random

Person 1 ...and he had a baseball bat

Person 2 That reminds me of a dancing banana

both 1&2 ROTFLMBOASIPBJTATMMLHCISR

ROTFLMBOASIPBJTATMMLHCISR by Randomvlog39er Im on youtube December 10, 2010

rotflmbosmk 

rolling on the floor laughing my but off "while" slapping my knee

whats rotflmbosmk

its rolling on the floor laughing my butt offwhile slapping my knee

hahaha now i would really think somethings wrong with you if i saw you do that hahaha

lol well i do it 99 percent of the time that i find something funny hahaha

rotflmbosmk by Douglen July 15, 2011

rotflmbo 

1. Rolling on the floor laughing my butt off
2. Often used to express your laughter

P0ptart - THAT WAS HILARIOUS NOW I'M ROTFLMBO!!!

Toa5t3r - SAME :P

rotflmbo by Gypsyaaaahhh September 29, 2007

rotflmbo 

roll on the floor laughing my butt off

after someone tells you somthing funny.... u can say this.... rotflmbo

rotflmbo by gunit555 January 3, 2009

ROTFLMBOWTIME 

rolling on the floor laughing my butt off with tears in my eyes

ROTFLMBOWTIME by Anonymous October 15, 2003

rotflmbotmgcaacto 

Rolling On The Floor Laughing My Bollocks Off Till My Girlfriend Came Along And Cut Them Off

can be used for something UBER funny or sarcastically because not much is THAT funny

D: did u see me hit that guy?
M: rotflmbotmgcaacto...NO just NO

rotflmbotmgcaacto by BrownieBoy1990 December 9, 2008