mass 

Used in the Bay Area of California. May mean in the extreme, large quantities, or something that is gnarly.
Has recently fallen into usage for something that is deep or meaningful

I had mass issues with that movie, it sucked in so many ways.
I was hungry, so I bought mass chips.
Did you see that guy's wave? It was mass.
My professor of philosophy can be so mass sometimes.

mass by repos January 5, 2008

mass 

The butt-ox of a man.

--Did you see Oz yesterday?
--Yeah...not bad, but too much mass.

mass by Mass April 18, 2004

mass 

mass (verb): to fabricate a lie with no specific purpose or gain other than forcing one to be uncertain of the truth even when told the truth; to joke or lie about something spontaneously against an individual while remaining completely composed to complete the illusion of seriousness; sometimes involves a group where one individual who isn't aware of the truth is massed upon; to fuck with

Greegins: "I got my video all pumped, man."
Bilbo: "You get that ATI X800 sheenen?"
Greegins: "Actually, I got the ATI X800."
Bilbo: "OOHH, gracious!"
Greegins: "Nah. But when I get it, it will be."
Bilbo: "Don't mass!"

mass by pquijal September 25, 2004

Mass 

to chill, hang out, or relax with a group of friends and family

Hey Man, let's go mass.

Hey Man, I'm enjoying the massing were doing.

What a good Mass session

Mass by poop December 13, 2003

MASS 

Shortened and somewhat corrupted pronunciation of the derogatory word 'dumbass'. Used to describe some kind of fool, or someone who's made a particularly foolish mistake, or some kind of epic fail.

Quite notably created by the infamous Dylan Basnett, along with other such words such as 'PAIN' and 'CREM'.

Dylan: I thought the current prime minister was Tony Blair?
Jack: MASS Dylan! Old Blair got the boot eons ago.

MASS by michaelfishywishywish. July 22, 2010

Mass 

An insult for a fat or large person.

Hey your such a mass!

Mass by Cod Rainer July 12, 2007

MASS 

the two words 'my ass' put together

steven: damn do you see that girl ass

mike: hell yeah

jill: stop looking at mass

MASS by king12 January 15, 2009