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You know that really cool motor bike sound? Have you ever wanted to have one for that sound but you don't have enough money? Look no farther. This is ...
What you will need: A plastic water bottle A bike with bumpy tires
Crush the bottle. Then shove it in between the tire and the top of the fork (look at the picture for better explanation).
Now ride around town and impress all your friends with your dirtbike!
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