Can I buy a motorcycle from a dealer being under 16?

If I go to a dealer can I buy a motorcycle if I don't get a loan on it. I live in California. Also what should I expect would they give me a hard time or ask my parents if they're sure about they're decision and make them sign papers. Or will it be simple and I could just walk out the door with my new Honda Grom.
Added (1). I pay for it in full cash could I get it?

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