Another way to demonstrate it on a bicycle, you can do something pretty much every child has already done numerous times: ride without your hands on the handle

Another way to demonstrate it on a bicycle, you can do something pretty much every child has already done numerous times: ride without your hands on the handle bars (hands free). To turn, you lean in the direction you want to go. But what way does the handle bar turn when you do that? It counter steers! You will fall if it doesn't (which is essentially what the No B.S. Bike demonstrates).