You cannot milk a goat for 13 years
Caribou can't fly.
One is 6 people singing 100 songs, the other is 100 people singing 6 songs.
He thought he saw the rotating car washer as a tornado
When the terrorists asked for anything cheaper than one-way.
Banned from the zoo.
Goats
A cow that can milk itself !
Nepal
You can't keep milking the dead cow for 13 years