This kid is painting a fence when his dad comes and tells him that he should paint every nook and corner and if he doesn't it will start decaying. Then the kid says doctor uncle also told him the same about teeth. So finally he concludes that like colgate protects his teeth, he protected the fence.
My Second thoughts...
The kid applies toothpaste with his own hands.. He applied paint on the fence with his own hands...Toothpaste protects the teeth and paint protects the fense. But the kid says he protected the fense, so isn't it he who protects the teeth too???
