If people from Poland are called Poles, why aren't people from Holland called Holes?
Hillbilly Herman James enlisted in the Army and on the first day as an enlisted man he was given a comb. The following day the Army barber sheared all of his hair off. On the third day the Army gave him a tooth brush. On the fourth day the Army dentist yanked several of his teeth out. On the fifth day he was given a jock strap, that afternoon Herman went AWOL.