A wife asks her husband, “Could you please go shopping for me and buy a carton of milk and if they have avocados, get 6”.

A short time later the husband comes back with 6 cartons of milk.

The wife asks him, “Why did you buy 6 cartons of milk?”

He replied, “They had avocados.”

(YES, YES, GO AHEAD – READ IT AGAIN you missed reading ‘if’)