Is It Inborn?

We were outside this evening. All was peaceful. I was sweeping away the eternal cobwebs that pop up outside. The kids were riding their bikes.

My back was turned - just for a moment - when Mackenzie ran over. "Mama! Come look! Aiden is pee-peeing in his bike!"

"What?" I responded in disbelief as I turned around to see my perfectly potty-trained little red-head pants down peeing neatly into the basket of his Big Wheel, a devilishly proud grin plastered on his face.