Onomatopoeia; the sound a pair of testicles makes when smacking against a female body during intercourse.
"I was balls deep in this girl and I couldn't stop hearing the plack plack plack of my balls hitting her"
by JoCool311 May 24, 2009
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v. getting around to last-minute packing, but actually doing nothing - or slacking.
Sky: Damn I really need to pack.
Shan: Do it.
Sky: I'll do it in the morning.

Morning..
Shan: What you doin' here? Aren't you supposed to be..?
Sky: Ugh. Placking.
by skybluewhaleshan January 08, 2009
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Inserting a china plate into the arse crack of your partner.
"Hey Tim hows spicing up the love life going"

"Awesome mate, I placked that bitch good. Used 7 plates, it was super jizzfective"

Placking Crew 4 lyf
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Used for expressing sheer excitement or joy.
Sha-plack-ow! I just won $100 on this lottery scratch off ticket!
by Corrupted81 July 10, 2008
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To get the living bejesus beaten out out of you
The Spud copped a Right Royal Placking at the hands of the Convict
by Schlockywocky November 09, 2009
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