CBA stands for c - can't, b - be, a - arsed
Meaning someone is not going to do something because they don't want to or just are blatantly lazy.

Chronic burning asshole syndrome. When you eat food hotter than the devil's dick and it burns your asshole to the point where you cry, the burning usually lasts hours making you wish you were dead

stands for cryptobehavior analysis

the abstract art of inferring social cues through otherwise innocuous behavior

An acronym for "Chicken Breast Avocado". Refers to the most delectable and sought after sandwich in all the world. Made to order exclusively at Jean's Delicatessen in Bethesda, Maryland, the "CBA" primarily consists of chicken (thinly sliced), breast, and avocado. Additional garnishes include locally sourced red tomato, alfalfa sprouts, and fresh chopped lettuce. This exquisite combination of world class ingredients is served on an artisanal pita with a smattering of succulent mayonnaise. The CBA is commonly served with a free cookie of choice, courtesy of the Jeans staff. It is a favorite among the B-CC students and Jean's regulars formally known as "C3".

Abbreviation for cute baby animals