Top Definition
An ecchi ghost.

mumu = ghost
cchi = short for ecchi
A mumucchi! did you see that!
by 23+1-1 March 25, 2009
6 Words related to mumucchi
A pervoius ecchi ghost that is ero-friggin scary.. and ecchi at the same time!
person1: hey dude! last night i saw a freakin' ghost!
person2:whoa! how does it look like?
person1:well, it looks like an ecchi ghost..
person2:(emotes) its a mumucchi XD
by abs0lu†ezer0 March 25, 2009

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