You can't keep milking the dead cow for 13 years
A: The porcupine has the pricks on the outside.
about 40 years.
You stop milking a cow after 10 years.
If the planes came from the outside.
Waking up at 5 am to milk the almonds.
Hare in your milk!
You cannot milk a goat for 13 years
A dead cow! (My 5-year old made up this joke)