Tim cheats to beat Tool Time guest Bob Vila at a trivia game. Randy pulls a prank on Curtis, a geek at school.

Tim puts a piece from a Chinook helicopter in his lawnmower for a race against Bob Vila. Brad and Randy get Mark to eat a tadpole so that he can play with them.

After Bob Vila raises more money than Tim for Jill's library fundraiser, Tim challenges him to a race... in his unfinished hot rod.