"Sorry," he said, "but I'm being pursued by androids. I refuse to have social contact without anyone unless they prove their humanity with a good game of Arimaa."
It's a game designed to be easy enough for a child to play, but really hard for a computer player. My co-worker considers it to be a Voight-Kampff test you can play with a chess set.
Extra bonus: I finally found a game where I can beat my evil robot double!