MakeShift
I don't know, It's written all over your face.

craigb

bapu
So far nobody got the "joke"?

That you're called the Forum Monkeys but there's only threeum you?
 
After that I only see partial jokes due to the words.  Daryl's almost covering his mouth, then there's the sunglasses suggesting blindness but the ears aren't covered at the end.  Or, you guys are signing but I can't figure out what thanks again to all the words over everything (just checked and, again, Bapu's the odd man out with a non-letter/number - another joke?).  Or, you've been PhotoShopped in front of Buckingham Palace thus turning it into the House of Uncommons?
 
I will say that the guy in the middle sure looks brighter than the two on the outside.  (Just sayin'!) 

craigb

Rimshot
http://en.wikipedia.org/wiki/Three_wise_monkeys

That was guess #1 of mine except Bapu's not covering his ears (of course, Mooch's comments about his mixes seem to indicate that covering them isn't required).

bapu
Try harder to "get it".
 

jamesg1213
'Young, Gifted and Black'?

craigb
Well, if it has anything to do with the words, then I can't read them in that pic!