Sticking your penis in to a nostril for sexual gratification. Also known as nostrilling or nose sex.
by MysticX September 19, 2007

Marlowe woke up on the floor with a hangover and throbbing from a blow to the head. He poured half a tumbler of bourbon and knocked it back. Not a cure but would have to do for first aid.
(past tense of "knock it back")
(past tense of "knock it back")
by ray jr. December 10, 2009

This most commonly happens during a threesome via an act called "double penetration" when two males accidentally pull out at the same time and knock the tips of their penises together. "Hey bro, I didn't mean to turtle knock you last night, It was a total accident."
by Joeislegend05 November 16, 2010

by spinvvs February 19, 2023

To be completely devastated. It comes from the highest scoring action in the sport of cricket:- where the ball exits the circle without leaving the ground.
I was knocked for six after my husband left me
My car was knocked for six after I rammed it into a wall.
My car was knocked for six after I rammed it into a wall.
by Kung-Fu Jesus April 28, 2004

Potatoe Knocking is a simple prank where you bend a wire hanger long ways, and then back on itself so that it can hold a potato in the bend. then you hang it on the door knob or door knocker of a persons frong door with a long string tied to it. you run accross the street with the other end of the string, and give it a few strong tugs. somebody answers the door, doesnt find anybody, and only a potato. They usually say something like "what the fuck? potatoe?"
A Person tugs the string durring a successful potato knocking exploit-
:thud thud thud:
(Person answers door)
"What the fuck? A potato?"
unsuccessful-
:thud thud thud:
"damn kids and those fucking potatoes"
Either way its a good time
:thud thud thud:
(Person answers door)
"What the fuck? A potato?"
unsuccessful-
:thud thud thud:
"damn kids and those fucking potatoes"
Either way its a good time
by evenmoutcandoit May 27, 2008

The raising of one foot onto an elevated surface, arching of the knee, then reaching under with one hand in order to perform sexual acts upon oneself. Traditionally performed in a seated position with a slight hunch in the back. Not recommended for those suffering from lower back pain or chronic injuries.
I hear Steve put his back out again knocking calf last night. We really have to find him a girlfriend
by Renshaw March 09, 2008
