Top Definition
A single word that means so much. It entails that you have mighty mighty mad 1337 ninja skillZ.
Tom: What makes you think you can kick my a$$, Judy?

Judy: imaneffingninjayo!

Tom: *quivers in fear*
by thefriendlytoaster July 27, 2007
7 Words related to imaneffingninjayo

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.