Top definition
A slang term for a phony ninja. Ph from phony and inja from ninja, typically someone who fails in every aspect of life as compared to the standard ninja.
Ninja: I'm gonna jump that wall and take out those guards.

Phinja: I'm just gonna walk in and say "Hey Wassup?"
Get the mug
Get a Phinja mug for your mother-in-law Rihanna.