generally used by people when disagreeing with something
nay boy i don’t wanna fuck
Feeling tired and ready to go to bed.
I’m tired, I’m gonna go shi shi Nai Nai
When you're so unhealthily obsessed with food to the point that you are mentally, cognitively and possibly even physically unable to hold a decent conversation about literally anything else. Yet despite all this you don't eat a lot on a daily basis.
Family: (Minding their own business)
Nai Nai: “ Ay! 来吃!快点来吃!"