Claim: In "Bobby Goes Nuts," Bobby couldn't enroll in the YMCA boxing class; instead, he enrolled in a self-defense class for women where he quickly mastered the technique to hard kick the testicles of his opponent.
Evidence: "Bobby Goes Nuts" is the first episode of the sixth season of the American animated television series King of the Hill. In order to do so, Hank comes up with what he believes is the perfect idea and suggests Bobby go to the local YMCA to enroll in a boxing class. Unfortunately for Bobby, when he goes to the Y to sign up for boxing, he finds out the class is full. Bobby asks to be enrolled in something, and is placed into a self-defense class for women because it is the only thing that is open. After some initial reluctance from the instructor, Bobby is allowed to stay in the class and quickly learns and masters the technique taught as self-defense: a hard kick to the testicles, usually preceded by a yell of "That's my purse, I don't know you!"