roflcoptering 

rolling on the floor laughing while spinning like a helicopter's blades.

Guy 1: Oh my god, is tom having a seizure?
Guy 2: No, he saw you naked and he can't stop roflcoptering.

roflcoptering by Scrubbie January 18, 2009

Roflcoptering 

The act of laughing like a manic while spinning in circles with your arms out like propellers.

I roflcoptered when I saw someone roflcoptering.

Roflcoptering by zlin February 25, 2011

Roflcopteronlolcano 

Its state of trance in which each and every muscle of your body to each and every cell is laughing till death. it takes you on a ride of laughing ecstasy.

GUY A : Harry's wife says, "Harry, do these jeans make my ass look like the side of the house?" He says, "No, our house isn't blue."

GUY B : ROFLCOPTERONLOLCANO !

Roflcopteronlolcano by the chosen one ! August 15, 2010