You Dont Say, AHAHAHAHAHAHHAAH! I'm not a fan of this kind of humor (it think it gets annoying in real life unless everyone's in the mood), but the "You don't say" Nick Cage meme has got to be the funniest meme ever. I couldn't stop laughing.
"Oh god it must be too late and I need to sleep cuz I made the face and said "phteven" out loud and now I can't stop laughing." - Not my quote, but it was exactly what I did. Most honest LOL moment of my life.