Top Definition
Funny monkey disease, or FMD, is just a nicer way to say AID's. It would be alot nice if you heard, sorry i gave you funny monkey disease, rather than, sorry i gave you AIDs. I mean, seriously, who wouldn't want to have something called funny monkey disease. It has the words funny and monkey in it. Sounds like fun
Sorry, I forgot to tell you, i have funny monkey diseas, you might want to get yourself checked.

Oh, ok....

-2 mins later-

What the hell is funny monkey disease???
by itchy2 January 10, 2009
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