keep your shirt on

“Each voyage is a bonding experience, but we stick to some basic decorum: Keep your shirt on, respect the person in the hammock next to you, and if you drink beer, then do so in moderation,” Mr. Barros said.

“I just told him, ‘Keep your shirt on and don’t be painting your body.’”

“Opening in the front. You can keep your shirt on. When you’re ready, you’ll need to give us a urine sample.”

The book may have some anachronisms and cliches - "keep your shirt on," indeed - but Katherine is a worthy foil to Jack, and its heart is definitely in the right place.

But as Ann Landers might have warned anyone excited over the prospect of smoother sailing through security: Keep your shirt on, Buster.