Top definition
To become excessively scared, angry or in some cases happy. Is said by many YouTube commentators, such as theRadBrad.
Man, playing Dead Space 2 makes me flip my shit every time.

If that chick over there keeps laughing, I might have to flip my shit!

When my dad bought the PS3 home, I flipped my shit!
by KateraChanChan August 20, 2011
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