knock on 

To knock on someone’s front door

Go and knock on for Harry and see if he’s home

knock on by mcjebb June 2, 2018

knock on 

Getting something correct or accurate

"His impression was knock on"

knock on by Kowareta September 27, 2020

knock on doors 

When in doubt, get off your butt and knock on doors! This is an old saying among detectives, salesmen and politicians.

I told the new guy, get off your butt and knock on doors.

knock on doors by I, Wreckerrr December 8, 2020

knock on wood 

this expression is a superstition that is used in the hope that a good thing will continue to occur even after its mentioned.

For Example : "My throat is finally feeling better, knock on wood!"

or

"I'm so happy it hasn't rained yet, knock on wood"

knock on wood by [DEE]best! December 27, 2009

Knock on Car Plastic 

This is a term used in the place of the superstitious phrase "knock on wood" when one is traveling in a motor vehicle and no wood is around. One instead "knocks on car plastic" to affirm the superstition.

Oh I hope I don't die tomorrow *knock on car plastic*

Knock on Car Plastic by Rellik Uzi September 9, 2010

knock on the doorgasm 

A knock on the doorgasm is when you're jerking off and someone knocks on the door while you're at the point of orgasm, causing a very awkard situation in which you can't decide whether to answer the door or simply ejaculate.

"Yesterday my friend Alex had a knock on the doorgasm. He was in a very sticky situation ;)"

knock on the doorgasm by fattmatt September 23, 2013

knock on wood 

1. A phrase used to express that something will or will not happen. This expression alludes to the ages-old superstition that literally knocking on wood would ward off evil spirits.
2. To masturbate, said of males.

(made-up scene from GTA San Andreas)

(at the beach)

Kent Paul: (ogling a hot girl come out of the water) Oi Maccer, just take a look at what just breezed out of the blue. That height, that arse, those jugs, those curves! Blimey if I'd be given the chance now I'd get to chuck my junk in that, knock on wood!
Maccer: Indeed man! Knock on wood, eh. Well alright then! *starts masturbating*
Kent Paul: No, jack-off Jimmy, not... ohh, *mumbles* fucking Northeners!

----------------
Mark H. Proud Urban Dictionary slang author since February 2004.

knock on wood by Mark H October 10, 2005