what does 1 in for a penny in for a pound mean ?

Selin

New member
What does 1 in for a penny in for a pound mean?
Once involved, one must not stop at half-measures. For example, All right, I'll drive you all the way there—in for a penny, in for a pound . This term originally meant that if one owes a penny one might as well owe a pound, and came into American use without changing the British monetary unit to dollar .