Shamelessly lifter from reddit:
Q: why DIDN’T Pascal cross the road?
A: because it was safer to assume that there would be a car.
While on the topic of logical fallacies:
Descartes walks into a bar and orders a a whiskey.
The bartender asks: “Would you like me to make it a double?”
Descartes considers it for a while and answers: “I think not.”
Nobody has seen him since…
And since it is Sunday:
A Higgs Boson walks into a church. The priest tries to shoo him out, because of all that irreverant ‘the God particle’ thing. The Higgs Boson insists that he must stay: “Without me, you cannot have Mass!”