Top Definition
Stands for only in Michigan.
O.I.M. Would it snow 8 inches today and be 65 Degrees tomorrow

O.I.M. Would have an artist as sick as Big Sean.
by Talanweiler1 February 13, 2013
to be an OIM, litereally means to be an embarassing idiot. It generally refers to children but can be used to describe people of any age.
Stop acting like an OIM, people are watching.
by the pasta god August 03, 2010
a total douche; the type of person who really gets under your skin just by being themselves.
John: Dude, what is this kids deal? No matter what he annoys the shit out of me.

James: Bro, the kid is and oim, plain and simple.
by uncleD03 April 19, 2011
to OIM, litereally means to behave in an embarassing idiotic manner. It generally refers to children but can be used with people of any age.
stop acting like an OIM
by hedro nickelback July 01, 2010

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