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1. A kitten or cat that wins at life.

2. The act of helping others and/or doing awesome unto others.

WinKitty was a word founded by a user named "meekakitty" on YouTube. It was popularized by John Green of the Vlogbrothers, when he asked his many subscribers what "WinKitty" could possibly mean.
1. Jingles is very WinKitty!

2. The Vlog Brothers, Hank and John Green, do various acts of WinKitty on their YouTube channel.
by ultimatekai December 13, 2009
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a term used for when something is a win, but with the additional 'kitty'. hence making it 'Win kitty'. Often said as a alternative to 'Yes!' or 'Yay!' or any other happy expression. Win Kittty was popularized by John and Hank Green of the vlogbrothers, a youtube fandom known as the nerdfighters.
"I just got the high score on Mario Kart!"
"Win Kitty!"
by nerdfighter415 September 13, 2013
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