Thunderwear!
If she's only wearing one sock. (This joke brought to you courtesy the homeless guy outside my local 7-11.) Edit: tweaked the punchline.
Because I wore the wrong sock that day.
It's driving me nuts!"
In case he got a hole in one.
One says "Hey, you, get off of my cloud!" The other says "Hey McCloud, get off of my ewe!"
Because they have rain over every country in the world.