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disease that can be passed on. also called the kissing disease. basicaly, kiss someone with this and you're so f*ckin screwed.
dude1:you kissed her?!
BF: so what?
dude3:she has that mononucleosis thingy
dude2:you are so screwed.
by Diamond Ice May 18, 2006
a viral insult, usually calling someone a douche bag, or tool. (commonly used with the suffixes -neck ass, -boot ass, and -face ass, etc.
Boy.!! im bout to cook yo mononucleosis head ass.!!! BOY.!!!
by The REAL Ceasar's Palace December 07, 2010