When I was a teenager (late 80’s) the phrase was “six-packing”. Well, I’m not sure the act is exactly the same, but it’s darn sure similar! Didn’t hear of “the shocker” until the linked story came out.
Never heard of it before.
“Two in the pooty, one in the booty.”
Known about it for a long time. Never actually used it, as I like my genitals where they are.
I’ve never heard of it before either.
Like your username, though.
Known it for years.
I didn’t know what it meant till now.
I saw the gesture just recently on an album cover, and was told, I think by my mom, “That’s a gang sign.” I just assumed she knew what she was talking about. Now I’m quite amused.
Not known it before.
But from the link I have seen the index and little finger salute often accompanied by sticking out of the tongue so that the finger pattern forms a frame arround the stuck out tongue. Don’t know if it is related to the three finger sexual salute.
I hadn’t heard this version. At the end of the 60s we used it as a combined gesture to indicate fucking (middle finger) bullshit (outer fingers).
(We also turned it around and held up the “peace sign”–with a little on the side.)
Ooo! We found one thing **tomndebb ** doesn’t know! Make that *didn’t * know.
(I’m not being mean, tomndebb, I’m just impressed at the number of things you know about. Maybe even more than **Q.E.D.? ** Hey! You guys should have a competition.)
Seems like an excellent accompaniment to me.
This is most popular where I live- been known as the shocker for years. You can see people sporting the t-shirts and stickers plastered onto every sign as far as the eye can see.
New to me, too.
Never heard of this before. But I’ve heard of a similar gesture.
In the 70s I went to a Star Trek convention here in Chicago. Arlene Martel, the actress who played T’Pring in “Amok Time”, said that she couldn’t make the usual Vulcan gesture, so she used a variant: the same as the Vulcan gesture, but with the ring finger bent and touching the thumb (I don’t actually remember seeing her use it in the episode, though). IOW, the same as this rude gesture, but palm out and hand raised vertically straight.
The “Six Pack” was two fingers and a thumb around here. I’d never heard of the Shocker until this thread, but I kinda been out of the “cool lingo” loop for a while. It might be common among kids here now.
Yes, and dammit I wish the craze would die down.
Yes, I’ve heard of it. I heard of it…five? years ago when I started college. I can’t view the link, since I’m at work, so I have no idea what’s there, but here are a few rhymes I learned about it:
“Two in the pink, one in the stink”
“Two in the junk. one in the trunk.”
“Two in the goo, one in the poo.”
Immature? Hels yes. However, when one is drunk, this is apparanty one of the funnieast things ever. Thankfully, the only girls I ever did it too (by “did it” I mean show the symbol and maybe make a rhyme, not actuall perform the act) were either close friends or girlfriends who had a good enough sense of humor to not slap me in the face. 
Interestingly, I had never heard of the gesture, or CollegeHumor.com, until last night when I was reading this New Yorker article.
Quoting the article, "A key to college humor, the four have realized, is that students like to think they belong to a small in-crowd that understands the joke, while the public at large remains clueless. … [A]nother familiar trope of contemporary college humor is a hand gesture known as the shocker, in which the ring finger of the hand is held down by the thumb while the remaining three fingers stay rigid. “No one over the age of twenty-five knows what it means, but I guarantee you that ninety per cent of college students know what it is,” Josh said. "
Thanks 
Never heard of it.
–Cliffy
Over 25, heard it a long time ago.
I’ve seen the gesture as a punch line to a joke that goes
Q: How do you make a woman do a Flipper impersonation"
A: I don’t know
Q: Well you do this(make gesture) and she’ll go Uh oh uh oh uh oh
If you’ve ever seen the show Flipper, you’ll know exactly the sound I’m referring to. Usually accompanied by vigorously swimming backward and away.