All that I really want from this is more detail about the time Mark Mothersbaugh (lead singer of Devo) had an existential crisis after hearing Weird Al's style-parody song 'Dare to be Stupid' because he thought it was a better Devo song than anything they had ever written.

Considering that it says "fingers" plural, and implies it's an English gesture, I would guess it's the "reverse V-sign" gestural insult that is popular in the UK. It has pretty much the same meaning as the middle finger.