mononuclefauxsis 

The fake version of mononucleosis; it is used by its purported victims to gain sympathy and a socially acceptable boycott to physical activity for the duration of a normal case of mono.

Leland stopped training for the race when he contracted mono, but I think he's wimping out with a case of mononuclefauxsis.

mononuclefauxsis by DioBo September 1, 2007

mononucleosis 

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.
BF:crap.

mononucleosis by Diamond Ice May 25, 2006

mononucleosis 

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.!!!

mononucleosis by The REAL Ceasar's Palace December 8, 2010