I lost my bike lock key, any suggestions?

I locked my bike to a pole with a U-LOCK and I accidentally lost the little circular key... any suggestions? I don't think I have any papers that show that I own the bike, which really sucks. What I want to do is go to the police and get them to cut it off for me, but do I need papers? I can't cut it... show more I locked my bike to a pole with a U-LOCK and I accidentally lost the little circular key... any suggestions?

I don't think I have any papers that show that I own the bike, which really sucks. What I want to do is go to the police and get them to cut it off for me, but do I need papers?

I can't cut it off myself because 1. I don't have the equipment 2. I don't have papers so when some random guy calls the police because he's thinking im jacking some guy's car, I can't convince him it's mine.

PLEASE PLEASE PLEASE any suggestions...?

Oh, and I'm 14.
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