nay nay baby

A small child throwing his hand up in the air, used to show that you failed a vibe check, older brother is robert

Sam: hey Jim! VIBE CHECK
Jim: *fails the check*
Sam: ha! You’re honestly a nay nay baby and it’s kinda cringe

Nai si

Nice
Commonly used by Chinese gamers, meaning "nice".
Used when something or someone does something beneficial to their team or something cool in the game.

Xiao Ling: "I'M GONNA DO A SICK CLUTCH, WATCH"
*Lands a sick clutch*
Xiao Ming: "NAI SI!"

nay thee

no u but cooler

"thou mother art gay"
"Nay thee!"

Nay nay shanay nay

This phrase is used to refuse a certain statement in a sassy yet friendly and humorous way.

Person 1: “Can I go to the movies with you guys?”
Person 2: “Nay Nay shanay nay! You gotta study”

nay myo win

The only Giga chad ever needed.

Girl: omg he's such a chad and such a nay myo win !! <333

Nay day

Where there is nothing wrong you’re just a pussy

Aaah do t know what’s up I’m having a proper Nay day

Nay-no

Despite being a seeming double negative, this term takes the older colloquial “nay” (meaning no) and further reinforces it with a second use of “no” creating a very emphatic expression of a negative response or declination of a request.

Person 1: “you wanna Netflix and chill?”
Person 2: “that’s a nay-no my friend”