get (one's) knob polished

vulgar slang To have sex or receive oral sex. Typically said of a male ("knob" is a vulgar slang term for the penis). If Brett didn't come home last night, I bet it's because he got his knob polished. Did you seriously expect to get your knob polished on our first date? Come on, man.

necker's knob

dated A rounded knob mounted to the steering wheel of an automobile so that it may be steered with one hand. So called because the driver (typically male) is able to place his arm around his girlfriend or wife. My grandfather gave me his old Cadillac, which still had the necker's knob on the wheel from when he first started courting my grandmother.

necking knob

dated A rounded knob mounted to the steering wheel of a car so that it can be steered with one hand. So called because the driver (typically male) is able to place their arm around their romantic partner. My grandfather gave me his old Cadillac, which still had the necking knob on the wheel from when he first started courting my grandmother.

the same to you with (brass) knobs on

An expression used to both reciprocate and intensify a sentiment, usually an insult, said by someone else. (The phrase "with (brass) knobs on" is used generally to indicate a much more extreme form of something.) Primarily heard in UK. A: "Your team stinks, and I hope they lose!" B: "Oh yeah? Well, same to you with knobs on!" A: "You're the dumbest twit I've ever met." B: "And the same to you with brass knobs on!"

with (brass) knobs on

In a much more extreme form. I've been to both, and I can tell you that Carnival is like Mardi Gras with knobs on. Your report is like my report with brass knobs on—it's 30 pages longer!

with knobs (or brass knobs) on

and something more. British informal

1998 Pi Magazine But all this would count for zilch if the music didn't stand the test of time. But it does, with knobs on.

with ˈknobs on

(British English, slang) used to say that something is a more complicated version of what you mention: It isn’t art — it’s just a horror movie with knobs on!

get one’s knob polished

tv. to copulate or otherwise have sex. (Refers to a male. Usually objectionable.) Man, if you want to get your knob polished, just let me know. I got girls! I got girls you wouldn’t believe!

necking knob

A swivel on a car's steering wheel. The necking knob enables the driver to steer with his left hand while encircling his girlfriend's shoulder with his right arm. Even when the driver was alone, the knob was an easy way to turn the car in the days before power steering.