My Name is Joe

Hey, My name is Joe
And I work in a button factory,
I've got a wife and a dog and a family,
One day the boss came up to me and said
Hey Joe, Are you busy? I said no,
He said turn the button with your _____.

1) Left hand
2) Right Hand
3) Left Foot
4) Right Foot
5) Butt
6) Tongue