1. A physco bitch who befriends all your friends to make you jealous after you break up. 2. Slut or a Ho. 3. a girl who sleeps with your roomate to piss you off.
1. "your being a total sydnee!!"
2. "she's such a sydnee"
3. Roomate: "dude I'm sorry.."
Victom: "It's cool bro..she's a sydnee"
by zx fuckin petey xz August 25, 2010
A little girl with extremely large and gross breasts. She jiggles when she walks and kind of looks like a man. Completely unoriginal. Pretty annoying. Makes little children cry and old woman commit suicide. But I love her!!!!
Look mommy, its a Sydnee!!
Get away from that filthy thing Jimmy!!
by HarleyQUIIIIIN!!! December 07, 2010

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