knocking out the donkey

to fuck a girl in the ass, and right as you're about to cum, you punch her in the back of the head so she tenses up.

The best orgasm I ever had was knocking out the donkey.

by Deez Nutz May 30, 2004

knock back

The act of some one attempting to pull you but your not interested and you give them the finger

Girl :Hey your really nice, you wanna go for a drink some time?
Boy :Err sorry not interested.

by Nick July 9, 2004

hard knock life

to have a hard life' to live a gangster life

ask annie

by me January 1, 2004

knocked up

usually when a female doesn't marry and becomes pregnant at a young age

Guy: Where's Lucy?
Father: She got knocked up, so shes getting an abortion

by cowkilla224 August 24, 2009

cock-knocker

noun.
A gentleman who bangs at the back door

See that Elton John, he's a right cock-knocker.

by Kev April 10, 2006

Knock First

An emo/pop punk band located in the San Fernando Valley (Southern California). The name derives from when a teenager (most likely male) is masturbating and gets walked in on to be caught in the act; hence knock first.
Changed their name to Down For The Count in 2003 due to a conflict with the name of an ABC show also called "Knock First".

Drummer: Man this fucking sucks, we came up with the name first.

Lead Guitar: Yea, what a gyp.

by Travis Wesley March 26, 2005

Knock it and Rocket

Similar to Hit it and Quit it.
It refers to getting a girl knocked up and leaving quick like a rocket.

I just met this chick at the supermarket. I'm going to KNOCK IT AND ROCKET.

by SpewKing October 21, 2010