For those special moments when you want to experience the full flush of a fever dream, I guess.

[‘m not sure you can still get Tenderrmint. It may have been overshadowed by more confident, Brutishmint.

An ad campaign helped it break out of the pack in the 60s:

It was additionally popularized when Pelican Films produced a series of commercials using music from Herb Alpert and the Tijuana Brass. Clark liked "The Mexican Shuffle" from the South of the Border album, and commissioned Herb to rerecord it as "The Teaberry Shuffle". In each commercial, a bored-looking person would unwrap a stick of Clark's Teaberry gum and start chewing it. The chewer would abruptly break into a rapid, energetic dance with distinctive shuffling steps for several seconds, then would just as abruptly return to his or her original activity

It’s been a long, long time - but I remembered this straight away.