Because they taste funny!
or
Time is fun when you're having flies
or
Because the sea weed
or
Glass flippers.
or
An earthquake.
or
Seven. One to change it and the other six to sing about how good the old one was.
or
He was trying to fetch a boomerang
or
It's someone who knows how to play the bagpipes, but doesn't.
or
None. Real Men aren't afraid of the dark.
or