Depends

[Tina]

Interviewer: Dick Cheney, do you wear boxers, or briefs?

[Justin Bieber]

Padded undergarments used to minimise discomfort and embarrassment of sufferers from weak bladders.

May also be used during intense moments of laughter.

A call-out term after hearing a funny joke.

[Julene]

Diapers for the elderly who have lost control of their bladder due to old age. (Can also be used figuratively to make fun of someone with a small bladder or someone who frequently wets their pants/bed.)

[Oralee]

Some big ass diapers!

[Agnes]

A substitute for underwear that people can pee or poop in without using the bathroom

[Couch Potatoe]

Indian for, I wore my sexiest lingerie and asked you to be my wife.

[Jason Yan]

A name brand, and also a word used when the answer is based off of a decision.