God's sitting up in his ivory tower; He's had enough of the pressures and stresses of being number one, so he's decided to go on holiday. He calls all his super-being mates up and they pop round to discuss a few suggestions.

"What about Mars?" says one of them.
"Nah, I went there 15,000 years ago" says God, "it was shit, no atmosphere and too dusty"

"What about Pluto?" suggests another.
"Nah, I went there about 10,000 years ago" says God, "it was freezing"

"What about Mercury then?" says another.
"It's nice, but I went there about 5,000 years ago, I nearly burnt my ..... off it was that hot,never again!"

"Well what about Earth then?" suggests another.
"You must be joking" says God "I went there about 2,000 years ago, knocked up some Jewish bird, and they're still bloody talking about it!"