Nayching 

The act of spending as much money in one night as pro wrestling legend Nature Boy Ric Flair

Man did you see Jerry throwing his money around last nite? he was nayching hard.

Nayching by Fab Manning October 22, 2011

Natching 

To chew noisily with your mouth open...

"Who's Natching in my ear?"

"Do you have to Natch when you chew?"

"Dude, stop Natching. It's really gross"

Natching by MissCalissa March 19, 2016

Natching 

To get yourself high by squatting low, breathing in and out deeply and quickly for about 30 seconds, and then standing up as fast as you can and blowing onto your thumb without letting any air out for about 15 seconds. Most of the time it knocks you out and you wake up feeling like you're in Inception. Sometimes it just gets you really, really high for a minute or two. Do not try this at home when your parents are there!

Dude, are you ok? You just passed out!
--Yeah man I was natching try it it's fun.

Natching by PopnFreshKev September 3, 2011

naching you? 

a response given to the common question whats up?
however enunciated by an italian-rooted boy/girl in real life or typed on aim.

whats up fabiana?
naching you?

naching you? by ellibunn October 20, 2009

naything 

A commonly misused synonym for mustard.

"These pretzels could sure use some naything."

naything by Ihop & Niquey February 10, 2010