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This word is often defined as the orgasmic noise of chinese or japenese people. Teenage girls most commonly say this when commenting on someone being attractive, or in other words, "hot".
"Omg Jeydon Wale is soooo hot"
"Girl, I know.. OO, MESUMI!!!!!"
mesumi by clachrislord00d July 23, 2009
Related Words
Measum Meesum mehsum messum Mesum mesumi mewseum Mewsmaxxing mewsul mowsume
A person who can only think about Apple products not even their own family

Most Mesum's tend to buy every apple product old or new

They are very religious as they do not hesitate to even think about Apple in a bad way or as a normal person would look at Apple they believe that Steve Jobs is God and that they are messengers of the religion of appleology and that they will be rewarded with a life as an apple developer for their good deeds
Guys is that a mesum

Yes I think he is a mesum

U can tell from his words

See he mentions apple in every sentence
Mesum by Guy 1234 May 19, 2015
Most awsome
Jason's love for Marsha is mowsume!
mowsume by Jason a Butler February 17, 2009
the dead hair follicle at the end of a pubic hair
Clay mills likes to mewsuls with his munge soup.
mewsul by steven April 22, 2003
An antiques-collection/display establishment dedicated to our "furry 'n' purry" four-legged friends.
If Garfield-related memorabilia was allowed in a mewseum, they would hafta dedicate an entire corner of the building to him!
mewseum by QuacksO December 13, 2019
Omg that is so messum (dickish) of u
messum by Jannetbury99 November 21, 2021