Scientific chicken test

Scientists at NASA built a gun specifically to launch dead chickens at the
windshields of airliners, military jets and the space shuttle, all
travelling at maximum velocity.

The idea is to simulate the frequent incidents of collisions with airborne
fowl to test the strength of the windshields.

British engineers heard about the gun and were eager to test it on the
windshields of their new high speed trains.

Arrangements were made, and a gun was sent to the British engineers. When
the gun was fired, the engineers stood shocked as the chicken hurled out
of the barrel, crashed into the shatterproof shield, smashed it to
smithereens, blasted through the control console, snapped the engineer's
backrest in two and embedded itself in the back wall of the cabin, like an
arrow shot from a bow.

The horrified Brits sent NASA the disastrous results of the experiment,
along with the designs of the windshield and begged the US scientists for
suggestions.

NASA responded with a one-line memo:  "Defrost the chicken."