1. when having sex with your girlfriend on a couch and you fall off
2. when engineers at NASA drop the rocket when moving it on the couch platform
2. when engineers at NASA drop the rocket when moving it on the couch platform
by mr astronaught October 31, 2011

a) the act of specifically raping a virgin teen girl in the anus
b) arriving somewhere unexpectedly, when they least expect you.
b) arriving somewhere unexpectedly, when they least expect you.
sociologist of criminal behavior, (visiting the cemetery of Marion State Prison, Illinois): Ghost Poinsalet, I hear you are famous, even among ghosts, in this cemetery. What have you been incarcerated, and executed for, 27 years ago?
ghost of Matthew Poinsalet (character from Dead Man Walking): Sir, it was for knocking at your back door, definition b), to the house of 2 virgin teen girls, then committing knocking at your back door, definition a), and then finally murdering my victims.
sociologist (under his breath): How atrocious, may we condemn all child rapists and murderers to the electric chair, Amen.
ghost of Matthew Poinsalet (character from Dead Man Walking): Sir, it was for knocking at your back door, definition b), to the house of 2 virgin teen girls, then committing knocking at your back door, definition a), and then finally murdering my victims.
sociologist (under his breath): How atrocious, may we condemn all child rapists and murderers to the electric chair, Amen.
by Sexydimma May 31, 2015

A person who succeeds at everything they do.
Me: I love Paul Allen! That guy right there is a real knock-it-out-of-the-park-er!
You: Yeah, I hate him.
You: Yeah, I hate him.
by MalumLibrum958 January 10, 2023

(näk-ing it doun) v. expression used when one "manscapes" (see manscape). Also a term used when one uses specific designs in one's body hair.
Steve, a bear of a man, wanted to be as slippery as he could for his KY Wrestling match. He resorted to knocking it down to ensure that he was as slippery as possible.
by narnar11 October 23, 2014

When one is expecting reward, only to receive punishment.
Instead of treated, we get tricked
Instead of kisses, we get kicked
Instead of treated, we get tricked
Instead of kisses, we get kicked
Me: Hey Mom, I took out the trash.
Mom: Oh good, now you can go dig for the recipe you just threw out.
Me: What hard knock life.
Me: Hey game developer, I found this crazy duplication exploit. As proof of concept, I duplicated a few items.
Developer: Market saturation! Permaban!
Me: Reporting bugs in this game is a hard knock life.
Mom: Oh good, now you can go dig for the recipe you just threw out.
Me: What hard knock life.
Me: Hey game developer, I found this crazy duplication exploit. As proof of concept, I duplicated a few items.
Developer: Market saturation! Permaban!
Me: Reporting bugs in this game is a hard knock life.
by Masogir November 5, 2019

1) That's hard to knock
by AZIMOV IS OUT HERE September 2, 2021
