post the nerdiest joke you know

[theTourne]

[ QUOTE ]
Descartes walks into a bar.

The bartender walks up to him and says, "Would you care for a drink?"

Descartes replied, "I think not." and disappears.

[/ QUOTE ]

I remember this joke being told in some capacity on these forums in the past. David Sklansky get upset because the punchline does not follow logically ("I think therefore I am" does not imply "I don't think therefore I am not"). I thought the argument was funny.