What is 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 - meme gif

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.