There was a time when late-night television hosts had the ability to provide viewers with engaging, highly entertaining television programming without the required use of nightly political rants and super-cheesy karaoke skits. This, of course, was way back in the 1980s when there was still a well-respected entertainment value in the simple practice of good ‘ol conversation,

Such was the case for David Letterman, who welcomed Bobby Weir and Jerry Garcia to the Late Night with David Letterman studios on April 13th, 1982 for a sit-down interview which has since made its way into Grateful Dead history.

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The interview, which took place just a few months after Late Night with David Letterman made its NBC debut two months prior on February 1st, 1982, opened with Letterman teaching Garcia the fundamentals of guitar playing with a quick “Proud Mary” tutorial. The two are then welcomed to the stage where a spaced-out Weir and Garcia (who’s able to hold it together) regaled viewers on the utopian memories of San Francisco in the 1960s.

It was during this opening question when Weir delivered what has since become a fan-favorite inside joke within the Deadhead community.

“Well first off there was the Acid Tests and that was a barrel of fun,” Weir stated, before then channeling his inner Hank Hill to continue with the trademark punchline, “More fun than a frog in a glass of milk.” Weir then appeared to completely lose his train of thought, requiring Garcia to come in a scoop up his friend’s clearly-melted mind and accompany his bandmate’s sudden loss of any cognitive ability by adding, “I was going to apologize for not having any memory.”

Related: Watch Jerry Garcia & Bob Weir Shoot The Shit With David Letterman During The Dead’s “Biggest Moment” In 1987

“At the time, it seemed as though things were going to change real fast,” Garcia continued. “There was this amazing momentum. When the Acid Tests were happening, it started with, ya know, 50-60 people or something like that, and in a matter of weeks it escalated to 3,000.”

The two—mostly Jerry, as Weir was still pretty spaced out—continued talking about the inner workings of the Grateful Dead family, Deadheads (many of whom were in the audience), tapers, and more. Their appearance on the show also featured acoustic performances of “Deep Elem Blues” and “Monkey & The Engineer”.

Relive the hilarious interview and duet performances below.

Jerry Garcia and Bob Weir – Late Night with David Letterman – 4/13/82

[Video: LoloYodel]

Weir continues to use his favorite catchphrase to this day. Just look at any of the press releases regarding Bob Weir and Wolf Bros in the past few years, in which Weir is often quoted as calling playing with Don Was and Jay Lane “more fun than a frog in a glass of milk.“