Meme? What's a meme?

Seriously what is a meme?
From the
Memequake! challenge. See all
353 entries (closed)
(
Spy is dead.,
Fri 26 Mar 2010, 16:06,
archived)
don't feed your spacehopper balloons
(
Smash Monkey lowering the tone of the whole internet,
Fri 26 Mar 2010, 16:09,
archived)
More like . . . what's in one . . .
(
Valin I changed glasses while I wasn't looking,
Fri 26 Mar 2010, 16:19,
archived)
armed and dangerous!
(
enceladus,
Fri 26 Mar 2010, 16:23,
archived)