At the time this ad first aired, The Bugs Bunny Show had long since moved to daytime on ABC. General Foods, at the time the makers of Kool-Aid, sponsored the show. I think General Foods and WB had ended their partnership by the end of the decade.
Anyway, in 1966, Bugs (Mel Blanc) is shilling from a place called the Kool-Aid A-Go-Go, and sings "Doin' The Kool" as the kids dance.
Too bad this wasn't released as a novelty single----or was it?