If you're on a plane and you're waiting for a lavatory to be vacant so you can go about your business in it, and if Victoria Beckham is in it before you, then boy, oh boy, do you have to wait. She has to apply her eyeliner before getting out. So go ahead. Hold it in, or pee in your pants. From National Enquirer:

"Posh Victoria spent most of the flight wearing comfy leggings, tee-shirt and no make-up, but more than half an hour before landing -- when everyone needs to pee -- she locked herself in the loo for a glamfest. She finally emerged sporting cool threads, spike heels, major makeup and perfectly-coiffed hair as shutout firsties groamed, shaking their heads in disgust!" (Print Edition)

Pee in your pants please.