S03E14: Tire Trouble

Beaver wants to raise chinchillas and begins building a cage in the garage. However, when Beaver changes his mind, Ward tries his best to get Wally and Beaver the clean the mess up in the garage. Things get worse, when Ward unknowingly runs over some of the wood and nails that Beaver left laying around with the car, causing the boys to try to patch a flat tire before Ward finds out.