

A typical bountiful crop of Sunday silent penultimate panels.
Broom Hilda by Russel Myers
Between Friends Sandra Bell-Lundy
Mutts by Patrick McDonnell
The Born Loser by Chip Sansom
Pearls Before Swine by Stephan Pastis
9 Chickweed Lane by Brooke McEldowney
Non Sequitur by Wiley Miller
Not that I'm a cultural illiterate, but I had to check with the Mrs. to understand today's Frazz.

Because if any one knows anything by Goya it's this, "The Third of May."

And, well, that's just not funny at all.
But Mrs. Penultimate Panel knows a thing or two about art that's not mass distributed on newsprint and she suspects that Jef Mallett was trying to reference this one: "Saturn Devouring his Son."

Slightly funnier.
Cultural references are tough. Gary Larson may have been the best at them--for example, the one with Herman Mellville struggling with the first line of Moby Dick ("Call me Bob.") But they need to be very specific and well known to work. In this instance, there's just not enough detail given for the joke to work. It comes across more as intellectual posturing than an actual smart gag. (And Frazz is no stranger of intellectual posturing.)