I've been waiting to see if this came up, but it seems to be left to me.

It used to be said, "America will elect a black president when pigs fly."
100 days into the present incumbency, swine flu!
Sounds better out loud.

Pooh and Piglet were trudging through the snow.
Piglet's thought bubble: I'm so lucky to have a friend like Pooh!
Pooh's thought bubble: This bastard sneezes, he's DEAD!

Local radio jokes.