Because they lactose. Moo
A horse and rider.
Bob
He said "Hey Hey Hugh Hugh Get Off Of McCould"
I am not a crook!
With a cow-culator! (Rimshot)
The farmers milk them dry.
A living room
The Just-Ice League.
Because they lactose I don't know why I found this so funny! ready for the down vote to begin 3
A bilingual chicken