High level abilities bordering on super-natural. Not necessarily a reference to fighting ability, but can refer to any skill.
Grandmaster Flash got ninja skills.
Meaning you have uber 1337 abilities at everything because ninja's are totally sw33t.
My friend's got ninja skills. he's the master of picking up women.
Ninja skills is all about Bob!
Bob has some mad ninja skills. Actually he's a ninja at heart!
Being overly beasty and awesome.!
Example : Luci and Chase have NINJA SKILLS :) !
Thats a fact fer sure.
to win a fight in an unorthadox yet very effective way
Did you see Matt bust out the ninja skills on Jim? I saw his brains and everything!