You were doing 63 in a 50 or it was a 50 and you were doing 113?
If you were doing 113 then be thankful you weren't arrested on the spot. And get ready because your probably going to loose your license.
I you were doing 63 then just say you were keeping up with traffic and didn't realize you were going that fast. We're something nice to court and hope the judge cuts you a break.