The pilot who jumped out with a parachute.
Because the pilot was a loaf of bread!
They've already told you.
Because everyone who can run, jump, or swim is already across the boarder
Every time someone said "Get down!" they jumped up and started dancing.
The liver
Because roaches can survive nuclear radiation.
Cause they would whistle on the way down
A. A Pair of Shoot (parachute)