it's the big green spring, i believe. it's immense strength is the cause, since when it tips, it is crushed a little, so it bounces back incredibly hard.
"its your computer not me"? well, you just saved it as a phunlat without textures. i have vista '09, and the only time textures don't work for me, people's computer did that. so you are being a HUGE hypocrite. also, i see no "pwned" in this whatsoever.
well, what about the trigger? it's obvious you selected the mac10 and mirrored it, without reversing motors. next time you steal tech, or what was done here, vandalizing, do it right.