a spider hand is when somebody thinks there a big man and does the "ten man walk" really badly. And there hand looks like there about to shoot a web out of it like spiderman.
Boy 1- 'Dude wtf are you doing with your hand?!'
Boy 2- 'Nothing man im just walking'
Girl- 'I know he has serious spider hand'
Boy 2- 'Nothing man im just walking'
Girl- 'I know he has serious spider hand'
by Bangbuddie of thee spiderhand April 13, 2009
Positioning of the hand where the middle and ring fingers are inside the vagina, curling back toward the palm, which is against the labia and clitoris.
The key when using the Spider-Man Hand is to bring the middle and ring fingers toward the palm versus overly aggressive flicking of said fingers inside the vagina.