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Somebody who is a true, grade 'A' dickhead. This is the type of person that'll ruin your day if you even look at them. You usually see these types of people bitching and complaining about actions people have done to them throughout the day.
Original Cock Monster - "Oh my goodness! Yet again Eric has to go ahead and ruin my day. He throws paper balls at me and everything! I don't even want to go near him!"

Friend of OCM - "Goodness dude! Stop being such an original cock monster, you're just as bad as Eric is!"
by Seiko The Neko May 01, 2015
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