shadow walking 

walking directly behind someone in a large crowd that way they make a path through all the people and you stay invisible. (:

on my first week at high school i became a pro at shadow walking.

shadow walking by ikkinxx November 15, 2007

Shadow Walking 

walking behind some one as if you were there shadow and when they turn around act like nothing was happening

I was shadow walking john and it was so funny.

Shadow Walking by JT,RT,RT,MR October 2, 2010

shadow wanking

Covert masturbation in a manner which is not viewable by a third party.

Appearing on a webcam viewable from the waist-up, while masturbating out of sight.

The viewer of the Shadow Wanker is not generally aware that masturbation is taking place, although the term is sometimes used when the viewer is complicit in the activity.

"I chatted to that hot chick last night and she had no idea I was shadow wanking under the desk!"

shadow wanking by robertbowen October 20, 2007

Shadowwalking 

Animation cancelling in a game of DotA to more efficiently attack an enemy hero who is moving away from a player's hero.

Often discussed in tandem with Orb Walking (a similar strategy but using hero abilities instead of regular attack damage)

Certain heroes can be used effectively while shadowwalking thanks to their easily abused attack animation and damage point, like Viper and Drow Ranger.

Shadowwalking by JayrdeKurt October 11, 2010