You haven't got to be a low rank to be a noob. I would say you're the noob needing a tank to kill lower levels than yourself. You can't be very good if you needed to use a tank.
Some noob shot me in a drive by. So I got my tank and blew him up 6 times, I blew his little butt buddy up 12 times, and when I died I shot him a further 3 times.
I hang outside LSC with my tank also. I like blowing these low levels to smithereens.
Btw, when I see your username I always see bum bandit rather than beach bum bandit.