iyamyas 

Acronym: If you ain't maintenence, you ain't shit.

Dude, I tagged IYAMYAS on the ammo guy's truck!

iyamyas by Kris December 2, 2004

iyaayas 

"If you ain't ammo, you ain't shit!" used by the ammo folks in the United States Air Force

iyaayas by stephen January 7, 2003

IYAOYAS 

If You Aint Ordnance You Aint Shit

the Ordie screamed IYAOYAS as he watched his ordnance turn the enemy into pink mist.

IYAOYAS by IYAOYAS September 11, 2003

IYAOYAS 

IYAOYAS = If You Aint Ordnance You Aint Shit

One would think that someone claiming to be an AO1 would at least know how to spell Ordnance!

IYAOYAS is a proud tradition!
Ordnance not Ordinance!

IYAOYAS by JoJo DaClown October 2, 2007

IYAOYAS 

A term common among aviation ordnancemen. It means If You Ain't Ordnance You Ain't S#@!

When toasting a shot "IYAOYAS!"

IYAOYAS by Snake_doc October 8, 2008

IYAIYAS 

If You Ain't Infantry You Ain't Shit

There's 212 jobs in the Army, but If You Ain't Infantry, You Ain't Shit (IYAIYAS)

IYAIYAS by Alan F. March 11, 2007

IYAOYAS 

If Your An Ordie, Your Asvab Sucks. In reference to the low Armed Service Vocational Aptitude Battery or ASVAB score required to become an Aviation Ordinanceman. This acronym goes along with If You Ain't Ordinance, You Ain't Shit which many AO lifers proudly display on anything they can write. It is believed that the first IYAOYAS reference was made up by some one in the nuclear power field who thought it would be humorous if AO's proudly advertised their level of inteligence.

IYAOYAS, Something all ordinancemen should be proud of

IYAOYAS by AO1 Flannery, CVN-72 November 28, 2006