A prank pulled on your friends, where you grab one by the shoulders and forcefully ram your knee into their anus. Patented by the famous AaronKirk. One may confuse a kirk-a-jerk with farting while having a penis in your anus.
"I saw kaps doing some kind of bodybuilding bullshit, so i took the opportunity to give him one good kirk-a-jerk. Man did he yelp"
Lead guitarist for Metallica, since 1983. Replaced Dave Mustaine. Gets a lot of shit from Megadeth fans and from idiots who otherwise don't like Metallica. He's a damn good player though.
Kirk Hammett can playfaster than you or anyone you know, so think twice before saying that he "sucks", ok?
One of the fastest guitarist ever. If you see him in concert he does arpegio runs that will blow your mind. The only reason the new albums don't have solos is because James Hetfield writes all the songs and he never writes anything that pushes Hammet's skills.