A Christian, a Jew, and an atheist are standing in line to be executed during the French Revolution.
The christian is first, and he lays down on the guillotine. Before the executioner pulls the lever he shouts, "My god will save me!". The lever is pulled, and the blade swooshes down, stopping just short of his neck. The executioner, believing a miracle of god has occurred, figures he can’t kill this man, as so sets him free.
The Jew lays down on the guillotine. Like the christian, he shouts, "My god will save me!". The lever is pulled, the blade falls, and once again it stops just short of his neck. The executioner, again, believes god is on this man’s side, and lets him go.
Finally, the atheist lays down on the guillotine. He examines the guillotine, finds a rock in the gears, and says to the executioner, "Well here’s your problem…"
The moral? There’s a time and a place for skepticism.
And one more, for good luck:
Q: What is the biggest problem for an atheist?
A: No one to talk to during an orgasm.