dave submitted the following exchange, along with this link. I'm not adding anything to it because it's hilarious and pretty much as long as the actual article:

What's in the vial?
Urine.
Drink it.
What?
Drink your urine to prove it's not a bomb.
This is ridiculous. I'm filing a complaint.
You said beverage right? I swore you said beverage. Your boarding pass was in your mouth.