someone who is so mean that he is funny.
hahahahah, Theresa is so munny!
by shawn the brawn September 26, 2005
something that is good, or key.
You see that new chain. That shit is munny
by Chickenfucker December 24, 2002
Sumthing you use 2 buy things with.
i got a fat wad of munny, lets go get sum weed
by Semen April 30, 2004