I was putz'n around Wikipedia, like ya do, and started randomly reading on Family Guy and realized that Chris is essentially giving the "shocker" in this photo.
Being that most cartoon characters only have 3 fingers + a thumb, this has got to be the equivalent of the shocker!
Hmmm.
I need to make sneak in various shockers in pics with MP Prime, Magnus, and the other articulated-hand bots.

masterpiece prime throwin' gang signs like stupid white kids from the suburbs!
Shocker .... ha ha, yes, I remember hearing about that for the first time when I was in the college dorm. I can't believe there's a Wikipedia page for it ... hilarious!!!