Love the Obama ones from night show hosts!
Kinda long, but always funny:
A penguin's car breaks down and he takes it to a mechanic. The mechanic says it'll take about 30 min to diagnose what's wrong and they can go from there. So the penguin goes across the street to a Baskin Robbins to kill time. He comes back after eating his ice cream and the mechanic has his answer.
"It looks like you blew a seal." Said the mechanic.
The penguin replies, "Oh no, this is just ice cream."