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.”