Can't call it talent, but with 10.
I could click the bones of my fingers by will, anytime/anywhere and could perform thumb deformities that looks atrocious.
Kids at my age were impressed and freaked out, but more impressed than freaked out.
Just at the age of 12 i realized that i was the only one of my friends who could do that, though, a humble few that i met throughout my life who could perform those acts too (though, not at the same location & different bodyparts)
Your age when you were first introduced to something that you carried on within your life and still have it now (may it be an object, good/bad habit, talent, whatevers-)