A woman asks her husband, a programmer, to go shopping.
Wife: “Dear, please, go to the nearby grocery store to buy some bread. Also, if they have eggs, buy 6.”
Husband: “O.K., hun.”
Twenty minutes later the husband comes back bringing 6 loaves of bread. His wife is flabbergasted.
Wife: “Dear, why on earth did you buy 6 loaves of bread?”
Husband: “They had eggs.”