You stop milking a cow after 150 years.
I've never been in a submarine.
They both have wings, except for the elephant.
Motorist: So I could race home to get my license and registration.
He was stopped for speeding fined $50 and dismantled for six months.
He wanted rich milk!
You use a cow-culator. Or you round them up. Or any other method the commenters want.
Milk and honey.
Because Papyrus drinks plenty of milk.
Indentured servitude.