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A 'ninjaflip' is a verb dictating the action of an arguably epic form of self defence.

Subject A is confronted by Subject B who intends to shake hands. Subject A grabs the wrist of Subject B and flips him/her over his head in an 180 degree motion, flipping and dropping them midair. This results in pain, and frequently laughter from an audience.
"Dude! Did you see Amy? The headmaster just tried to shake her hand and she totally ninjaflipped him!"
"Amy's pro."
by Raggamuffin2k9 December 25, 2009
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Prior to the moment of ejaculation, switch orifices to the surprise of the recipient.
Person A: Jessica was shocked to have a mouth full of cum after doing it doggy style.

Person B: Yah, she got ninja flipped.
by <>< thefishkid June 22, 2016
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