Used to describe something awesome. You can use this term to describe anything at all--as long as you are trying to describe that thing as awesome. You may use the term "Ill na na" however you like, even if it compromises the structure of a sentence. Ex: "Have the ill na na weekend"

This usage is common in Coney Island Brooklyn

An elderly woman that is sickly or diseased.

A sweet and really cool grandma.

Ill booty, sick booty, good pootang, yummy vagina

Some sweet pussy that tastes like sweet and sour chicken without the sauce. Nothing runny or drippy.

the coolest

your nana is ill