I ordered a chicken and an egg off e-Bay last week, and thanks to the Royal Mail, I'll never know.
The following is perfectly logical to some .....
A wife asks her husband, "Could you please go shopping for me and buy one gallon of milk, and if they have eggs, get 6."
A short time later the husband returns home with 6 cartons of milk. The wife asked him, "Why did you buy 6 gallons of milk?"
He replied, "They had eggs."