The shocker has engraved itself in our culture, and by no coincidence has played the supporting role in many pictures on this site. Of course we are all familiar with "Two in the pink, one in the stink" but what does that really mean, and why has the shocker come to mean so much more over the years?
From then on, the shocker has become a somewhat trivialized form of sexual gratification. Only the bravest of man has ever attempted it, and only the kinkiest of woman has enjoyed it. The idea of forcing three fingers into two holes has, and always will, create mathematical quandaries worthy of Will Hunting himself. (Side note: Driver hated it when Damon tried the shocker on her in a trailer off-set, and that's actually why there wasn't a sequel.)
The shocker is a beautiful gesture, with a wonderful history. But it is so much more than that for those of us in the fraternity of shockees (not to be confused with Giant's Tight End Jeremy Shockey" Hmmm" .Tight end" Definitely not gonna get two in that stink.) So I say shock often, and shock proudly. Shock just for shock's sake. Don't wait for an appropriate situation, make it appropriate. Say something like, "that's shocking" and throw a shocker right in the air, high and mighty, like George W. at Yale.