All up in that Nash 

Verb. The act of delving fully into an experience or setting, in a deep or otherwise radical fashion.

Noun. The utmost level of commitment to an activity.

"I'm about to get all up in that nash!" Ryan loudly announced as he stepped underneath a 30 foot waterfall.

All up in that Nash by MustachedMarvel April 20, 2017

All up in your shit 

to be in somebodys business

Stop being all up in my shit

Teachers are always all up in your shit

All up in your shit by Nacka December 13, 2003

all up in my grill 

whoever the person is below me is wrong.
all up in my grill doesn't necessarily mean in someone's business.

it means someones in your face.
grill = face.

therefore, it can also be used describing someone who is excessively annoying and bothering you.

That ho was all up in my grill. Tell him to get his nasty, annoying self outta my face.

all up in my grill by mahal April 20, 2005

All up in my ass 

A conjunction of all up in my grill and on my ass.
An uncomfortable situation when multiple people are telling you what to do. (up in my business

This project sucks. I got the entire board of directors all up in my ass.

All up in my ass by Shelley1999 February 18, 2009

ALL UP IN MY GEORGE FORMAN

TO BE IN ONE'S GRILL.
TO BE IN ONE'S FACE.
ALL UP IN SOMEONE'S FACE.

"GIRL HE WAS ALL UP IN MY GEORGE FORMAN TRYING TO ASK FOR MY NUMBER."

"WHY YOU ALL UP IN MY GEORGE FORMAN? GIVE ME SOME SPACE!"

ALL UP IN MY GEORGE FORMAN by SENRYAN July 24, 2009

all up in my kool-aid 

all in my business....nosey...not minding own business

man sarah..you u all up in my kool-aid

all up in my kool-aid by kat October 21, 2004

all up in ya

Excessively doing something.
A graving or lust.

I was all up in ya mama last night!!
I wanted to put Deez Nutz all up in ya smurf.

all up in ya by Tadowta April 29, 2006