Just kidding about the title of this post. Anyway, with Peter Tork having left The Monkees, it certainly seemed as though Bugs Bunny (Mel Blanc) would've been a good fit as his replacement in this spot for Kool-Aid. Have to imagine this ad aired on CBS, which was home to both reruns of The Monkees and The Bugs Bunny-Road Runner Hour when this was made in 1969.
And, yes, that's Micky Dolenz singing the Kool-Aid jingle on the soundtrack. I'll have another one up soon with Bugs doing the honors in an earlier piece.