ROFPMEO 

Rolling on Floor Poking My Eyes Out

The comments on that thread were so idiotic that instead of ROFL I ended up ROFPMEO.

ROFPMEO by Got Owl April 23, 2009

ROFLMEOW 

Routinely Overlooked Felines Left Meowing Endlessly Outside the Window

Chrissy8: Oh that poor, neglected kitty :(
DahrkMastR: ROFLMEOW :(
Chrissy8: :'(

ROFLMEOW by startpanicing September 16, 2009

roflmeowcat 

roll on floor laughing while clutching a toothbrush

1) omg i totally just fell over nothing
2) roflmeowcat

sort of the cooler version of rofl and roflmao and cool because it has the word meow and cat

can also be roflmeowcas (roll on floor laughing while clutching a stick) or any other word you want to put on the end.

roflmeowcat by lozza_luvs_lora August 22, 2010

ROFCMEO 

Rolling on floor crying my eyes out.

first used in a facebook post by mia in the year 2010.

Random 1: OMG!
Random 2: What?!?
Random 1: Pokemon has been cancelled!!!
Both: ROFCMEO

ROFCMEO by solsed February 13, 2010

ROFPMGO

Acronym for "Rolling on the floor, puking my guts out."

OMFG, look at my guts there on the floor where I was previously rolling, puking them out. That state of affairs would ostensibly be explained by the fact that I was, at said previous time, ROFPMGO.

ROFPMGO by Jay-queeze of Rotterdam September 29, 2011