a.) Oral sex performed on a man in which the performer centers their attention just to the head of the penis. Also referred to as " polishing a door knob".
b.) Common practice of a female lowering her vagina over an automobile's gear shift knob, usually done after coming home without getting laid or having a fetish for auto-erotica.
c.) The twisting of the hand around the male penis, especially over the head, as if turning a door knob, during the performance of oral sex or masturbation.
Judy told Cindy that she had to knob job her gear shift last night because she was so horny.

Barbara told her date that if he didn't fuck her she would ride the gear shift(knob job).

Sharon can't suck cock worth a shit; she a knob jobber.

Linda jacked me off so hard last night, I thought she would tear my knob off.
by Renown February 22, 2008
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A total pain in the ass. One whose attitudes and behaviors are negatively affecting a situation.
I can't stand hanging out with Peter today. That guy is being a real knob job.
by tecate March 7, 2006
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he went to the doctors for a knob job

"OMG, i got a small knob, i need a knob job"
by knobbly July 17, 2006
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Many bitches enjoy giving a knob job, while all guys enjoy receiving a knob job!
by MOCO & P-Phat February 11, 2007
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A knob-job is a blowjob that guys get if their dicks are too big to get fully into their dicksuckers' mouths.
I give a knob-job to guys who have dicks too big to get in my mouth!
by eda-skip January 14, 2023
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To moan in a deep tone while giving head so it vibrates my cock in your throat.
My girl gave me a growling knob job last night and I blew my load soooo fast !
by J Hammer007 July 1, 2011
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