How did I start riding a bicycle without learning?

So growing up all my relatives and friends around me had the chance to learn how to ride a bicycle and it took time for them, falling, getting up and trying again etc.

I had this friend when I was a kid who had this big bicycle and he would ride around the backyard. One time we were hanging out and he had his bicycle with him, (I had never ridden a bicycle before so I didn't know how to ride) out of curiosity I asked him to let me ride the bicycle and he said sure so I hopped on it and I just started riding? Without falling or losing my balance. It felt like I had already known how to bike. I also remember doing a U-turn lol. My mom was sitting with this kid's mother, chatting and she was as shocked as I was when she saw me riding this big bicycle haha. Any idea how this is possible?

How did I start riding a bicycle without learning?
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