Used to describe a person, place, or thing of extremely high quality. Derived from the richness of nuts. Something chock full of awesomeness.
Dude, those brownies were nutty. I ate 12.
Did you see Obama's speech last night? It was nutty. I'm inspired.
Person2: OMG IT'S NUTTY I'M SUDDENLY ON FIRE
Person3: HOLY FUCK I JUST SHAT MY BRAIN OUT OF MY ARSE
Person4: OH MY GOD I'M FLOATING
Nutty: WHAT THE FUCK you're not made out of gold