ROFLdotCOM 

This is where you tell someone to go when they are being:
A) Stupid in a humorous way.
B) Hilarious
or when someone makes a joke which is extremely amusing.

<Person 1> How many babies does it take to cover a wall?

<Person 2> I dunno. How many?

<Person 1> 1 - if you throw it hard enough.

<Person 2> ROFLdotCOM!!!

ROFLdotCOM by Wurd To Volkie February 19, 2003

ROFLPOTTOMUS 

A hippotomus that eats roflwoffles and pwns faces. Easily distinguished by it's purple skin and crossed eyes which enables it to pwn multiple faces at teh same time. Hates teh ROFLNOCEROS.

Bob: omg wanna cex later?
Chris: ROFLPOTTOMUS, nty kthnxbai

ROFLPOTTOMUS by Teh Bob & Rob September 18, 2008

ROFLPOTTOMUS 

A hippotomus that eats roflwoffles and pwns faces. Easily distinguished by it's purple skin and crossed eyes which enables it to pwn multiple faces at teh same time. Hates teh ROFLNOCEROS.

Bob:pmg wanna cex later?
Chris:ROFLPOTTOMUS, nty kthnxbai.

ROFLPOTTOMUS by Teh Bob & Rob September 17, 2008

rofldoctor 

A doctor taht is needed for one who laughs to hard.

Person1: Wouldn't your first clue be like, "honey, have you seen the dog?"...."Honey?"
Person2: AHAHHAH
Person1: OH GOD! omg hes laughing too hard...WE NEED A rofldoctor OVER HERE!

rofldoctor by J-Fed May 9, 2006