Knacking 

it is the act of grinding the opposite sex .
for upmost pleasure and excitement.

Person 1: Guy what are you going to do to your girl in Destroy Dick December
Person 2: I'm going to be Knacking her

Knacking by da hype November 5, 2018

Whappy Knacking  

When your masterbating with no porn and it takes like 20 minutes to get off and you keep switching hands because your forearms are burning.

"I was so bored, that I decided to start Whappy Knacking on my couch."

Whappy Knacking by Slappy Fack November 30, 2006

Knacking 

Term used to describe pain and uncomfort. Chiefly used in Britain, more commonly in the North East of England.

Adolf : "my back is knacking!!"
Joseph : "I hope you get better soon"

Knacking by naziscum November 22, 2009

flint knapping 

Flint knapping is when two guys put pieces of flint rock between their buttcheeks and moon land each other. The friction generates a spark which tickles their anus hole and gives the Flint knappers extreme pleasure.

Bobby and the boys are planning a flint knapping event for the club competition this weekend.

flint knapping by Aldi Aldi October 19, 2017

bagel-knapping 

verb: a technique commonly used by college students involving the taking of bagels from the dorm cafeteria with the sole purpose of saving as snacks for later. The most common form of bagel-knapping involves stuffing as many bagels as possible into your sweatshirt.

"Shit, dude, I'm so hungry, but we're out of snacks."
"Well, get your sweatshirt on. Let's go bagel-knapping."

bagel-knapping by E.B. & J-Stone September 11, 2011

Knackin 

To have explict sex, hard ,fast.

"come on love lets get crackin with the knackin"

Knackin by j.dougall November 19, 2003

Knacking 

"knacking"refers to knacker drinking i.e the craze of middle-class Irish teens to go drinking in fields and on beaches."on the knack"is an expression to indicate whether someone decides to "fuck the pub,the owner has enough money" and make like a true viking and go drinking in the wilds.This practice ids highly illegal and half the fun is eluding the "fuzz"(police) and getting pissed for half the price with a perfect view of the sunset.It is also preferable to teens as they have the ability to 'listen to music they actually like' outdoors rather than have to listen to "disco biscuit muzak" in clubs and "mid-life crisis tunes" in pubs"

"hey man,are you heading to the stores(nightclub) tonight?"
"nah,fuck that,man,michael tierney(the owner)has enough money.Me and the lads are going knacking on the beach.We'll get twice as much drink for our money and listen to music that we actually like for a change.Ah,sure,you know yourself it's better to go viking style"

Knacking by Wezsez April 15, 2008