A further explanation would be to exploit a weakness that as stated is so mind numbingly pathetic the victim should be shot.
Also the phrase "j00 h4v3 b33|V EPH PH1V3D (TBH) WTFL0L!!11one" is used to emphasise the fact that the exploit is so insanely easy, a 12 year old counterstrike player could do it.
Technical reasons: It involves sending far too many requests. It's effectively a denial of service... just a very VERY dumb one which originated on babblers.co.uk