Bob the knob is the act of giving a blow job. Where the person doing it head goes up and down.
Hey what happened with that whore you were with last nite? Did she “bob the knob”?
by Sixxx14 November 25, 2020
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WHEN THE WOMAN GRABS THE MALES PENIS AND TWISTS IT COUNTER CLOCKWISE IN A CIRCULAR AGGRESSIVE MOTION, WITH A TIGHTLY CLENCHED FIST AT THAT, OUT OF ANGER
IM GONNA BOB-KNOB YOU IF YOU CAN'T FUCK ME RIGHT, GENIUS
by CASANOVAMAN January 26, 2010
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Performance of fellatio on the male penis.
He had a micro but I was still able to Bob the slob knob.

My co-worker decided to Bob the slob knob on me in the store room.
by Dick Onchin October 31, 2020
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teacher: you need to study harder
me: you need to bob on my knob
by Psycho August 11, 2004
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a crude slag term for bobbing on the knob. ie a blowjob or blow/hand job done while wearing a kilt. you must complete the blowjob with a cum shot to the FACE! (extra points for eye shots)
oh the other day i was wearing me kilt and i got the best "hob schlob on a bob knob"... i gave her the biggest facial i think has ever cum outa me knob!!! even got her with a good one to the eye, for good measure of course.
by William, SleepingWith September 29, 2010
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