1 definition by pebble

Top Definition
A girl who seems sweet and loveable and awesome when you start dating her, but turns out to be a bitch later, particularly by cheating on you.
"So, how are things going with you and Lisa?"

"Oh, we broke up man. She turned out to be a complete ninjabitch-- She fucked my best friend and didn't tell me for three months."
by Pebble January 17, 2006

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