PIPL

Peeing In Pants Laughing

Used when someone finds something very funny

Person1: You got skills dude!
Person2: That's what your mom said last night!
Person3: PIPL!

BHAWL

Banging Head Against Wall Laughing

You say that when something funny happened

Person1: You got skills dude!
Person2: That's what your mom said last night!
Person3: BHAWL!

ROFLMAO

ROFL = Rolling On Floor Laughing
LMAO = Laughing My Ass Off
ROFL + LMAO = ROFLMAO
ROFLMAO = Rolling On Floor Laughing My Ass Off

n00b: Stop shooting me in the head plzzz :'(
pro: ROFLMAO you n00b!