a 'negative' talent.... or 'talent' meant sarcastically.
I'm good at getting into trouble... I've got a knack for it!

Joey is good a picking up girls.... he's got a knack for it!
by bazooka-jo February 2, 2016
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Sexual slang (U.K, East Midlands, South Yorkshire, Lancashire (localised) :When men brag to their mates about sex with a very attractive women.
EG:

"I can't believe I knacked her"?

Anecdotally lying or exaggerating popping a girls cherry.

E.G:

"I knacked her ya know?"

Or similarly gloating about "breaking in" or "destroying" a supposed virgin (slang for wild, kinky, hard or just passionate sex) a woman known to be classy, and/or hard-to-get (usually to other lads). Or anal sex with a women :

"I PROPER knacked her!"

Conventionally among friends being deliberately as innapropriate, forthcoming or sexist, common as possible by replacing: "Knacked her."

With: "knacked that"
"I knacked her ya know?"

"I PROPER knacked her."

"Can't believe I knacked her/that"
by Rixta1010 May 18, 2018
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Belfast derivative of 'Knock'. Usualy said by a spide.
I'll knack yer ballacks in!
by Desigol December 20, 2004
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He knacked me. He was a good knack.
We were going at it, it was so good. Al I can say was knack me harder.
by Mergodfather January 25, 2023
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1. To be scolded, told off(see bollocking).

2. To be in pain.
1. I forgot my homework so my teacher knacked me.

2. I hit my hand off the wall and it knacked(If it's hurting at the time you say it is "knacks").
by Clive Warren March 19, 2009
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Knack, ones state of being full after snacking out while smacked(Being high as shit).
by Reed Nagga Reed July 15, 2010
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One who is of the lame variety,
A Bitch,
Punk ass lame
Person 1: hey you know mike?
Person 2: yeah he's a knack!

Use by peckerwoods in the California state penitentiary.
by Beefy2316 January 5, 2020
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