look up any word, like the eiffel tower:
 
1.
Commonly used word describing a woman whose ass it is sooooo flat that only a samuri with a katana blade could have cut it off so cleanly...usually followed up with extreme laughter and pointing by male friends
That girl was hot as hell from the front, but when she walked by I noticed she had been shinobied like a motherfucker
by Geoff Robbins November 18, 2006