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1.
when Jonathon Loughran gets owned by Mark Finn, hence the definition "Finned"
Jonny got Finned TBFH
by Ross Leightley March 21, 2007
 
2.
When you are shafted, done over, ripped off or stitched up for no apparent reason or benefit to either party
God dam it! I was just finned!

Did you just fin me????

Don't fin me, man!
by Ming the-Merciless June 03, 2009