Dr. Boudreaux was performing a science experiment on a common insect, the flea. He proceeded to carefully remove one leg from the flea on which he was working. Then he shouted, "Jump!", and the flea jumped. He recorded his findings as such, "flea can jump with one leg removed."
Then he carefully removed a second leg and said, "Jump!" Again the flea jumped with no problem and he recorded the findings. He continued the experiment one leg at a time until all the legs had been removed. The flea, now legless, sat motionless when ordered to jump.
"Hmmm, very interesting," Dr. Boudreaux commented. Then he recorded his findings..."When all the legs have been removed from a flea, he can't hear anything."