Dictionary of science and Technology 1926 p56.
Astletation - The ability of some species of insecta to regrow the lower regions of the body when losing the rear two legs and regions in between.
Modern variation by forum members who've just driven to Sydney and back and been booked for speeding at least once possibly twice:
Ars-l-tation - clandestine showing of the nether regions as a salutaion to a departing police officer who's just booked you.

KV