Three brats (Army, Navy and Air Force) were boasting about their respective fathers.
"My daddy is in the Army and he bathes twice a week!" said Henry.
"That's nutting," said Butch. "My daddy is in the Navy and he bathes three times a week and even, sometimes, in the sea."
"Oh yeah?" said Percival, not wishing to be outdaddied, "My daddy is in the Air Force and he keeps himself so clean in the air he never has to take a water bath."