i used to go pretty good back when i was still in school. me and alot of my dumbass friends used to just try and rap and me or my friend jess would be making up a beat as we went along. it was pretty badass at the time :P. although attempting to beatbox with braces now shreds up the inside of my mouth pretty good and it doesnt sound as good...

as for the video thats sweet. i love watching video's or just listening to people who dont just think theyre good but actually sound fucking sweet as well