The Grim Adventures of Billy & Mandy (TV Series)

Wrath of the Spider Queen (2007)

Richard Steven Horvitz: Billy, Billy's Dad, Cave Harold

Quotes 

• [Billy has summoned an annoyed Grim to school] 

  Grim : Honestly, Billy, you bring me to school with you every day. I bet I know more about the metric system than you!

  Billy : Oh, yeah? Then what's the *capital* of the metric system?

• Billy : Oh my gosh! I just remembered what the capital of the metric system is!