Take the words out of his mouth
or
Just one, provided there is a programmer around to explain how to do it.
or
First he lies on one side, then he lies on the other.
or
One in 3,000,000 has a chance of becoming a human being.
or
In a barking lot.
or
An udder failure.
or
An Algae-bra
or
Because it would fall over if it lifted the other one.
or