We'd change our underwear every three weeks, all at once.

I *almost* had to change my underwear after watching the Thunder Run trailer yesterday.

This is a place where allegiances shift faster than most of us change our underwear.

"It's like trying to change your underwear without taking your pants off," he said.

And now, everybody must change their underwear every hour.

You change your underwear every day, you write a story.

He changed cars more often than he changed his underwear.

I guess they changed their underwear and headed north.

He couldn't remember when he'd last bathed or changed his underwear.

She'd need to change her underwear if things didn't cool down soon.