non moo cow 

A cow that does not moo, unlike the moo-cow that actually moos.

Non moo cows DO NOT moo.

non moo cow by Ane the Tiger September 17, 2014

phi moo 

nickname for the sorority "Phi Mu", which is infamous for overweight members.

"Watch out, it's a phi moooooooooo"

phi moo by polly453734 September 5, 2007

poo moo 

when you have extremely bad breath, when your breath stinks of shit.

The two boys squared up to fight...
Jimmy:come on then you fucking dick!
Hamish:Holy shit, get away from me, you have poo moo!

poo moo by doyouwantit May 26, 2010

Sailor Moo 

One of any number of anime fangirls who dress as Sailor Moon (or one of her cohorts,) but whose body type is obviously not fit for the role (i.e. they are fatties.)

Me: Yo Josh, check out that cosplayer over there!
Josh: Man that is one ugly Sailor Moo!

Sailor Moo by Scaramanga9 September 3, 2008

Beanie Moo 

A Boston Terrier puppy with perfect black and white coloring. She would almost look like a mini cow.

Aww, look at little Beanie Moo! She is so cute!

Beanie Moo by Angel April 26, 2005

Vend-A-Moo 

Prevalent most recently in certain areas of the South, a vend-a-moo is a sort of vending machine that vends gallons of whole, two percent, or skim milk. Each gallon, at present, is $3.00.

Hey, I don't want milk from Wal-Mart. Let's go to the Vend-a-moo and get some!

Vend-A-Moo by Jana D. May 18, 2006

Deja Moo 

The feeling that you've heard all this bull shit before.

Person # 1: So then I caught a fish, like, ten feet long!
Person # 2: I have a strong feeling of Deja Moo.
Person # 3: No wonder! He's been telling the same damn story for thirty years!

Deja Moo by Skunkpit September 13, 2009