When you make the shocker(two in the pink, one in the stink)and use the thumb as a "free rover" to stimulate other areas of the woman's sensual areas. If executed properly, the hand will form a "C" shape, hence the "C-Clamp".
The shocker is nice but the C-Clamp is better. I gave the old lady one last night and she vibrated worse than a Furby on crack!
a sexual fingering techneque. the index and middle fingers are out, and curved. so is the thumb. they are curved to make a "C shape." the thumb is placed in the vagina, the index and middle fingers are placed in the anus. after insertion, much pressure is applied.
I C-Clamped my bitch so hard that she waddled the next day.