Top Definition
Totally going bonkers. Bouncing off the walls hyperactivity. Very angry or happy. Based on a cult video of a ninja kitten dancing to the ska genre comedy song Flip out like a Ninja by the band Seven Seconds Of Love. Noted also for winning it's legal battle with the Coca-cola company over the song's use in a commercial.
1.Dad's doing a ninja flipout over my report card, I actually got A's this time.
2. He's ninja flipout over the Concert tickets he won off the radio contest.
by rewolf7 November 13, 2007
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