Top Definition
The beginning of ninja hour is signified by actions one attemps and succeeds where they would usually fail.
Brett just caught the pop bottle I threw at him behind his back! It must be ninja hour again
by PseudoVoid August 18, 2008
8 Words related to ninja hour

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.