(Lagos, Nigerian slang) To engage in any sexual activity e.g. kissing, grinding, head, hand e.t.c. a common synonym is smash
"Guy we're knacking tomorrow"
"Did you guys knack?"
The teacher cought them knacking(smashing).
by Badbitch4l March 11, 2018
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The best video game ever made babyyyy
Knack 2 has the best gramphics and the best grameplay.
by BiffSniffer82 July 22, 2019
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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."
by Slappy Fack November 30, 2006
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"Thanks knigg knack"

"That's cool, I'll see you tmrw knigg knack"
by KG-of-319 January 5, 2010
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The single greatest sequel of the worst game ever made.
Also a meme from videogamedunkey Youtube's channel.
by Steoko Solokov July 28, 2018
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