Chess Alzheimer's 

When you're playing chess and you take so long thinking about what move you're going to make that you end up making an idiotic move you spotted in the first 5 seconds but forgot about later on.

During a game of chess, after thinking about his move for 20 minutes ...

Ryan: Ah ha! Eat that! You have been had my friend.
(Jon swoops in and takes Ryan's queen)
Ryan: (Gasp)
Jon: Looks like the ol' Chess Alzheimer's got you again. Checkmate, fool.
Ryan: (Tears up)
Jon: It's okay man. Let's go watch Upstream Color. It'll cheer you up.
Ryan: No thanks, I like stories that are actually good. You know, with a beginning, middle, and end. Fuck that $hit. I'm going to play Halo. (flips chess board and leaves with dignity)

Chess Alzheimer's by RhInO May 18, 2013