sixty nining 

the pracice of positioning oneself with one's partner so that both people have the other's genitalia in their mouths

they were sixty nining in the closet

sixty nining by Capt. capacitor April 20, 2004

Ninging 

To throw something across the room as hard as you can.

Jordan got pissed and started ninging random objects across the room.

Ninging by Hjnx April 30, 2013

forty nining 

Two dogs.
One guy.
And a reach around.

Man, I'm really in the mood for some forty nining, but I only have one dog.

forty nining by 49in' for days January 19, 2014

Ninnigoonk 

Slang for vagina

What my mom told me to call it when I was young

My ninnigoonk is so itchy after I shave it.

Ninnigoonk by PineappleEater123 July 19, 2018

..ningningz

The best kpop account ever 😍😍 #stanningning #stan..ningningz 😍😍

..ningningz is amazing

..ningningz by ..ningningz April 12, 2022

Ningning 

main vocalist of the kpop girl group aespa, also the most prettiest,talented and amazing human being that absolutely no one deserves.

“yooo did you hear ningnings high note in black mamba? it literally gave me goosebumps all over my body.”
“bro wtf same she’s a whole package full of talent.”

Ningning by LyonIsOffline July 7, 2022

Snifty nining 

When two dogs smell each other's butts at the same time.

Did you see those two dogs in the park? They were totally snifty nining each other.

Snifty nining by Recros May 9, 2011