Firesign Theater was a product of Pacifica Radio, when I was working there--I never found them funny, too strained.
Since we have some of our British members on this thread, I wonder if any of you recall two funny songs that I used to hear on London juke boxes back in the mid-Sixties?
"Nobody Loves a Fairy When She's Forty"
and (don't recall the title) one whose lyrics began with "When you're feeling glum, stick a finger up your bum, and laugh, laugh, laugh...."
Anyone here recall something like that?