To get someone (usually a female) pregnant.
Danny: "I guess I should've used a condom last week..."
Mike: "Dude you can't go around friggin' knocking up ten-year olds!"
Danny: "There's no statutory rape law in Maine."
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An expression used in the place of knock on wood. Used to express something that will or will not happen. Usually followed with a light tap of the ballsack.
"I can't believe it's been sunny all week!"
"Knock on cock man."
"Good point."
Dirty knock is usually used in Ireland, as a way to define a slut/slapper/whore/tramp/hooker of some kind. A girl who will do pretty much anything with a guy.
Shes some dirty knock!! You've probably got the clap now!!
The term used to describe when a person, generally the perpetrator of a situation, uses a Glock-manufactured firearm to hit a victim, usually with the butt or barrel of the firearm in question.
Oh shit dude! Our home boy just got Glock-Knocked!
When you nut so hard it gives you the sensation of having been knocked out.
"Oh man did you just Knock Nut yourself?"
"If I did, I wouldn't be talking to you at this very moment now would I?"
"Damn you right."
The act of swinging one's fist into another's crotch for the sake of comedy or business purposes.
I had to crotch-knock three people to get into the porto-potty.