A stupid internet "joke" that is spread around like a disease, even though it contains no humor or amusement whatsoever.
Dickhead #1: "Hey bro, did you see that sweet new meme?"
Dickhead #2: "Yeah, it was so funny, the way it made absolutely no sense, but I pretended like I understood and liked it, so I fit in just fine."
A Meme derives from the word Mimic and depicts a typical facial expression that shows a certain emotion and can be applyed to a variation of similar situations.
Memes are a modern form of ususally politically incorrect communication used by the younger generation to cope with struggles of living in such a cruelworld.