Three. When you tell it to her, then when you explain it to her, and then when she gets it.
If you have to explain it then it is not that good.
Just two. One to explain to the public that everything possible is being done to solve the problem, and the other to screw the lightbulb into the water faucet.
She said, "Somewhere I have never been!" I told her, "How about the kitchen "
It's not a you, it's a me, Mario!
Son: The going bit is fine as is the coming home bit too but I'm not too keen on the time in-between!
Two of my favorites are:
The cow jumped over the moon.
Because he didn't see the funny side to it.
Because women are right.
Because if they dragged them by the ankles, they'd fill up with muck.
One's a cunning plan, the others a punning clan.
Because freedom doesn't knock. It rings.