PMROFLMAOOL 

PMROFLMAOOL is a superfused pseudo-portmanteau of several abbreviated phrases all pertaining to expressing one's particular amusement (i.e. Laughter) at an event that has just occurred.

This pseudo-portmanteau consists of elements of the following expressive abbreviations:

PMSL: Peed Myself Laughing
ROFL: Rolling On Floor Laughing
LMAO: Laughing My Ass Off
LOL: Laughing Out Loud

With the common element being the word "Laughing". PMROFLMAOOL actually stands for:

Peed Myself Rolling On Floor Laughing My Ass Off Out Loud. This pseudo-portmanteau is only used in the funniest of situations and should be done so sparingly.

Friend 1: Yo dude, did you see Kim Kardashian put on blast on TV last night? That sh*t was too funny man! What a ho'!
Friend 2: Yeah man, tell me about it! I PMROFLMAOOL'd so hard, I thought I was gonna stop breathing!
Friend 1: Say what?!
Friend 2: Just look it up on Urban Dictionary already...

PMROFLMAOOL by Omn1scientist June 2, 2010

Pmroflmao 

Abbreviation of the all too popular phrase: Pissing Myself, rolling on floor, laughing my ass off.

Guy 1: Dude, did you just see that guy fall over at the traffic lights?

Guy 2: Yeaaaaaah, I was just Pmroflmao.

Pmroflmao by Ryurn May 2, 2010