look up any word, like the eiffel tower:
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'
by Bangbuddie of thee spiderhand April 13, 2009