Moishe is driving in Jerusalem. He's late for a meeting and he's looking for a parking place, and can't find one. In desperation, he turns towards heaven and says: "G-d, if you find me a parking place, I promise that I'll eat only Kosher, respect Shabbas, and all the holidays…"
Miraculously, a place opens up just in front of him. He turns his face up to heaven and says "Don't bother G-d, I've just found one…."