[QUOTE=doug_or;165668]Tell them you have a lav overheat light and make them toss all their ice in the toilet (warning not responsible for damage to your airplanes plumbing)

Interupt their list of available beverages with Dr. Pepper, Mug Root beer, Old English malt liquor, etc.

[QUOTE]

You can really sell this one by typing "HOTLAV" in the FMS flight number and having a master caution light flashing. I have fooled several very senior FA's with this one.