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2.
A beautiful combination of fishing and drinking, one should and usually does imply the other.

Quantity of drinks is usually balanced on a 1:1 ratio, i.e. 1 beer for each fish caught.
Old mate 1: Whats going on this weekend digger?
Old mate 2: Just a bit of Finking I think.
Old mate 1: Finking?
Old mate 2: Fishing and Drinking,one tinnie for each fish caught, hooked one last time at 8:30am, missed my kid's footy game that afternoon.
Old mate 1: He'll live, hard to believe your wife left you though, doesnt she appreciate a good Finking session?
Old mate 2: Evidently not.

by Old mated March 22, 2009
 
1.
After banging your partner, the combination of euphoria, feels and exhaustion resulting in a state of mind somewhere between thoughts, feelings and a mind block.
After giving it to my girlfriend she was kind of just lying there with a look on her face and I asked her 'What's on your mind?'

To which she responded 'Finking'.
by TeamHubbieHunnie June 14, 2014
 
3.
Finking occurs when you wait for a girl to get nice and drunk, then you procede to have your way with her.
"Dude, I heard you've been finking ben's gf, nice work!!!"
by BillyShears December 18, 2006
 
4.
exploiting an unfair and/or gay stragey in video games
Dammit, stop finking!!! No more Jigglipuff sucking up!!!
by Matt Cherry September 19, 2005