Something you’re just good at with minimal effort and/or you learned much more quickly than average.
For me, it’s paper snowflakes. My brain just seems to effortlessly figure out what cuts to make to the paper wedge to make it turn out exactly how I want it. Largely useless, but good fun and was a much-needed ego boost when I was a kid :]
I recently discovered I can use an angle grinder with a level of precision and finess most people take some time to develop.
From free hand cutting straight lines into pretty much anything that can be cut, to precise cut of stone, cement or even metal.
I was dead afraid of this particular power tool for all my life and only when forced to use one to do some repairs around the house I discovered I could handle it so easily.