They Got Chops is the first segment of episode 13 of season 4 in Dexter's Laboratory, which first aired on November 20, 2003. In this episode, Dee Dee provokes Dexter with her judo skills, causing him to learn judo on his own and get back at her.
Dexter plays with one of his limbless dolls as "Mr. Jones" and puts him in a toy car he uses as an Urban Terrain Vehicle, and he uses a toy dinosaur as the villainous Gordonzilla who then snatches up Mr. Jones, and the latter calls Dexter for help. Dexter is about to grab a wrench when Dee-Dee (clad in a karate outfit) grabs his arm, yells "Ashitake!", and throws him at the window, leaving a crack in it.
This is another episode where Dexter isn't in his lab.