1: Something people with higher than a 118 IQ find humorous but not overwhelmingly funny.
2: A
joke or comedic event that people whom watch rick and morty wouldn't get but may in many cases might nod along like they understand the
joke.
3: Rick and Morty tries very
hard to be unironically "highbrow" but ends up just being as comical as the Simpsons season 24.
4: Intellectually stimulating, highly cultured.
A inspector visits a sanatoriun to check its conditions.
During the tour the director takes him to one of their newly designed
test rooms, claiming its foolproof.
"We fill up this bathtub to the brim see? Then we hand to the inmate a
spoon and a cup and ask him to empty the tub" Says the director
The inspector nods and replies with a smile "
Ah, i see. And the inmate, if sane
will choose the cup because it's the biggest."
The director then looks at the inspector and raises a brow "No, the sane one
will just open the drain"
Most people without thinking would just pass this joke off as "dumb" however, a classically intelligent mind would see some slight comedy in the twist, albeit an
easy one. Classic example of "highbrow humor."