Knife Hack?

What kind of hack is this guy using? I'm sure its not lag. You can see green bars.

[08.05.2011] Point Blank Knife Hack! (Semilian) - YouTubeⓘ

I want to know what is he using.

Sory qmoanix i don't understand what you say ...?

He Said on the Point Blank Indonesian the Knife Hack was Called hack witchcraft

one badass hack XD

Dont be Vulgar Please ...

ขอบคุนครับ

This is a Russian long knife (hacking skills)