Huck's potential customer is seen watching Quick Draw McGraw on TV. Quick Draw McGraw is another one of the Hanna-Barbera animated characters.
In this episode Huck admits that 13 is one of his lucky numbers.
Huck: (after a dresser falls on top of him) Man, this is a real heavy dresser.
Huck: (singing) Scrubby brushes, scrubby brushes, scrubby brushes, best of all.
Huck: 13th district, huh? Gosh, that's one of my lucky numbers.