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 :]
Very fast reflexes and I can see in the dark far better than most people.
I had never realized that my eyes were different until my compulsory miltary service. I could reasily read maps when others couldn’t see shit and I never stumbled during night training in the forest.
Fast reflexes are generally pretty cool to havel, but it’s not fun when a knife falls off the kitchen table and it is impossible to stop your own hand trying to catch it.
My “learned talent” is fixing mechanical devices. When I was 6 or 7 I took apart and fixed the family VCR so I could finish watching the Smurfs. My mom found me studying the jammed mechanism, with all the parts lying on the living room carpet. She had a fit and wanted to collect the parts away, I started crying and told her that I’ll never get it back together if she messes up their places. She watched as I released the stuck tape wheel and reassembled the device. And it worked.
I’ve fixed countless devices with just visual analysis and pure intuition after that.