xkcd.reader inoffiziell · kein Affiliate
? 246 / 3239 9.4.2007

Labyrinth Puzzle

And the whole setup is just a trap to capture escaping logicians.  None of the doors actually lead out.
Alt-Text (der eigentliche Witz)
And the whole setup is just a trap to capture escaping logicians. None of the doors actually lead out.