The man across the street is a pole knocker. You can tell because he always has red marks all over his face.
by BlakeTheSnakeDager September 5, 2016

by headhood December 24, 2007

Rock-knockers are like butterslaps.
All ne'er-do-wells call diamonds "apples." Like callin' money "bread" or rock-knockers "butter-slaps."
by sharpus March 21, 2021

The basketball hoop used in Australia with no backboard
The nickname 'Rock Knockers' were given to these hoops because Australian outback heat caused normal basketballs to explode, so people threw rocks at the hoops causing a knocking sound to occur hence the name 'Rock Knockers'
The nickname 'Rock Knockers' were given to these hoops because Australian outback heat caused normal basketballs to explode, so people threw rocks at the hoops causing a knocking sound to occur hence the name 'Rock Knockers'
Bogan 1: "Oi cunt pull up to the court and run some 1s"
Bogan 2: "Sure mate I've been grinding these Rock Knockers and they've given me deadly accuracy
Bogan 1: "Bet mate put the shrimp on the barbie"
Bogan 2: "Sure mate I've been grinding these Rock Knockers and they've given me deadly accuracy
Bogan 1: "Bet mate put the shrimp on the barbie"
by Azusaane November 20, 2022

Someone (most likely a family member) who immediately opens your bedroom door after knocking before you have a chance to answer. The same way a doctor does after the nurse leaves you waiting in a room for 20 minutes.
Mom: Why do you keep your door locked?
Son: Because everyone who lives here is a fucking doctor knocker.
Son: Because everyone who lives here is a fucking doctor knocker.
by Brain Mountain August 16, 2016

Mariam will become the president of the US and it will be in the year 2026. A fobber-knocker is a person who will never succeed in life
Ex1: A fobber-knocker is the idiot who thinks negative about everyone else to bring his self esteem up
by La Presidente January 15, 2005

an old womans saggy tits that hang down and knock against her knees with every step she takes. some men find this erotic and very hot sex can stimulate a penis to pentrate through the knee knockers and enter the vagina.
by jim dandy January 24, 2005
