Aside to the Planes / Frozen chickens thing.Could be Urban myth, go here and make up your own mind.
www.snopes.com/science/cannon.htm
(Useful Urban myths cross checker)
(www.snopes.com/science/cannon.htm
(Useful Urban myths cross checker)
A Lurker jacked up on B3ta on,
Wed 12 Nov 2003, 0:28,
archived)