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1 definition by auntmommyannie

 
1.
The act of or desiring to covet one's sibling in sexual ways.
"Dude. I don't like the way you're looking at your sister. I think you wanna Phinney her."

"Bob. What's up with you and your sister? I'm not sure, but I thibk there's some Phinneying going on here.
by auntmommyannie June 17, 2011