2
This can be split into a couple of different terms.

OMG = Oh My God!

ROFLMFAO = Roll On Floor Laughing My Fucking Ass Off

LMAO = Laughing My Ass Off

LMFAO = Laughing My Fucking Ass Off

Basically in a way its a dragged out way of exclaiming that something is the funniest thing you've ever seen.
1. OMFGROFLMFAO! Thats too funny!!

2. Random user 1(11:03:55 PM): dude, my fish just died
Random user 2(11:04:13 PM): OMFGROFLMFAO!!!
Random user 1(11:05:27 PM): not funny :(
by Mike Montana December 10, 2006
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3
This can be split into a couple of different terms.

OMG = Oh My God!

ROFLMFAO = Roll On Floor Laughing My Fucking Ass Off

LMAO = Laughing My Ass Off

LMFAO = Laughing My Fucking Ass Off

Basically in a way its a dragged out way of exclaiming that something is the funniest thing you've ever seen.
1. OMFGROFLMFAO! Thats too funny!!

2. Random user 1(11:03:55 PM): dude, my fish just died
Random user 2(11:04:13 PM): OMFGROFLMFAO!!!
Random user 1(11:05:27 PM): not funny :(
by Mike Montana November 26, 2006
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Get a OMFGROFLMFAO!! mug for your father Manafort.