S.C.A. 

Strong Critical Atheist- someone who not only doesn't believe in God, they have to argue with everyone who does.

Moreorless as annoying as people who go on about god(s) all the time, mainly because they're so argumentative.

Often found around members of the CU (Christian Union)

CU: 'God is amazing'
S.C.A.: 'Why?'
CU: 'Because He made everything'
S.C.A.: 'No he didn't, you're deranged'

Etc. etc. etc.

S.C.A. by LadyRin April 24, 2008

S.C.A 

Shit Cunt Apprentice. Most Australian people would associate S.C.A with a mediocre tool brand sold by an automotive retail outlet.
But in the tradesman world it's referred to a kid currently under going an apprenticeship who can not do anything right.

My S.C.A fucked everything up today

S.C.A by Ninjanine8 February 13, 2014

S.C.A 

S.C.A. aka Series continuation anxiety: the anxiety that one may feel when wondering whether or not a series is coming to an end

Man I just binge watched a show on Netflix and now I've got S.C.A

S.C.A by Term-inator 2 April 21, 2017

S.C.A.R. 

Special Operations Forces
Combat
Assault
Rifle

A reliable, light weight, accurate, versatile assault rifle made by FN. Comes in two variants: Mk. 16, chambered in 5.56mm, and Mk. 17 chambered in .308 NATO. Variants come in three sub-variants: CQC, standard, and long range. All variants and sub-variants come standard with: stock that folds and collapses and also has an adjustable cheek-plate, flip-up forward and rear sights, top, bottom, and side rail systems for optics, etc., and ambidextrous fire selector and magazine release.

The Delta Operative pulled out his new S.C.A.R. and his teammates were in awe.

S.C.A.R. by Omilophile July 28, 2010

S.C.A.T 

The eating of one's shit.

I do not like scat pictures

S.C.A.T by ass pounder June 28, 2003

S.C.A.T 

South Coast Area Transit

The very poorly named publicly owned transit company that provides bus service in Western Ventura County in the cities of Ojai, Oxnard, Port Hueneme, San Buenaventura.

Who would name there bus service S.C.A.T?

S.C.A.T by wilis August 31, 2005

S.C.A.B.

Skanky Cunt Ass Bitch

Angela is being a S.C.A.B. today!!!

S.C.A.B. by scabber July 24, 2006