What is humour?
A cunning beast that is fleeting, difficult to catch and uses various camouflage techniques to fool the ‘hunter’ into having caught it.
Saying something stupid is NOT the same as saying something funny.
However, being stupid yourself is a sure guide to get a few condescending laughs (this takes into account both of the above)
-Urban Dictionary (http://www.urbandictionary.com/)
What is a Meme?
A meme is an idea, behavior or style that spreads from person to person within a culture. It acts as a medium for carrying culturalideas, symbols or practices, which can be transmitted from one mind to another through writing, speech, gestures, rituals or other imitable phenomena.