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1.
An evil laugh
Mu ha ha ha mu ha ha ha
by Betty February 13, 2004
 
2.
a phrase substituted for in place of normal laugh, when speaker wishes to sound eviler / an immoral method of laughter due to extreme evil
muhaha! I have killed you! and your gay
by inquisitor bob June 06, 2003
 
3.
a evil laugh used by dr evil
why have a trillion dolars when we can have a million dolars

MUHAHAHAHAHAHAHAHAHA
by Alstar April 15, 2004
 
4.
A stupid laugh ment to annoy a person.
Usually used when someone says something really lame.

Possible to add as many "haha" as wished.
Dude1: John fell and broke his penis :~D
Dude2: muhahahahahahahahahahahahha
by ElNigga May 03, 2003