"Flesh and blood, not wax"
This episode's "Happy Happy Joy Joy" song (sung by a caricature of Burl Ives) quotes or paraphrases several of Burl Ives' lines from "The Big Country" ("Teach your grandmother to suck eggs," "I told you I'd shoot, but you didn't believe me!", etc.)
Clips from "Stimpy's Invention" are briefly shown in flashback in "Double Header".
Spoofs spoken-word intro from Burl Ives' "Ugly Bug Ball" - song
this title spoofs a song called Happy Happy Joy Joy.