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British Slang term meaning fuck off, piss off, wank off, toss off, or go away.

The term originated in Manchester, England and is very popular there. Most people use this term at least once per day.
C: Hey, do you fancy a chat?
K: No. Go knob off, you bellend.
Knob off by Big Boy P January 26, 2015
To masturbate, fap, jack off, wank, me-time, choke the chicken, spank the monkey, beat the meat, squeeze the cream, charming the snake, manual stimulation of the penis.
"Gonna go knob off for a bit", said Jeff.
knob off by FilthyHobo420 December 15, 2012
a particularly un-arousing experience

a floppy cock

an un-erect penis

opposite of knob on

U.k. (slang) Tell someone to go away
seeing my brother with my moms dildo gave me such a knob off

I have such a big-ass knob off right now

Knob off you little twat
knob off by Tom P. Cock April 21, 2006
I need to knob off into town.

I'm just knobbing off out.

Where's Pete gone? He's knob off to Benidorm for the weekend.

Right, I'm finished for the day, so I'm knobbing off home!
Knob off by Hungrymarco December 12, 2022

bite your knob off 

To over-charge someone for goods or a service. To inflate a pre-arranged price in an underhand way.
"We'd agreed £200 for the land survey but when I got the bill they'd put it down as £280. Is that normal?

No mate, I think they're trying to to bite your knob off!"
bite your knob off by carlosfortuna October 10, 2011

crank it up and rip the knob off 

An 80's term meaning to crank up the volume on a boombox and rip the knob off so nobody can turn it down.
Boombox: (song starts playing)
Guy: This is my favorite! Crank it up and rip the knob off!
More from Urban Dictionary

briefcake 

"Did you check out the briefcake in courtroom C?"
briefcake by Ben Frey April 6, 2006
Word of the Day on November 3, 2026
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.
Ratfucker by Ricky Ramjet November 2, 2017
Word of the Day on November 2, 2026
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