Top Definition
Uncivilized Monsters Of Poverty. Its commonly used in a derogatory fashion by "well to do" snobbish rich kids to describe those of a lower class.
"look Charles. It's those damn u.m.o.p.'s sitting on that green box again. lets go this way instead, I wouldn't want to get AIDS if one were the breathe on me. well said. indeed."
by David Cummings December 08, 2006
Ugliest MotherFucker On Post
this guy is a umop
by jjhurt5 February 02, 2011
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