You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: THE FUNNIES 
Clue: Debuting November 18, 1985, the caption in its first box was "So long, Pop!  I'm off to check my tiger trap!"
calvin and hobbes