Second Nature Share definition Flag A process or action that has been practiced over time so that it becomes natural or habitual. "Wow! You dribble the basketball so well!" "Oh, it's second nature to me. I've been playing basketball since i was 5 years old." Second Nature by The REAL JT April 7, 2008 0 0 Get merch Get the Second Nature mug. Buy Now — $32.95 See more merch