Umm... Depending on the maturity of your audience, you might want to refrase that line.

You might also want to mention how carrying a spare tube and a pump allows you to get rolling on the road and patch the tube later. I actually carry latex gloves so that I don't get too dirty i I have to change the rear.

Actually, you might want to mention making sure the chain is threaded right when changing the rear. Maybe mention practicing at home first?

Also, nearly all tires I know of DO need tire levers, so a demonstration would probably be good. I know they can be kind of tricky if you don't know how to use them...

Hope that helps some...