An acronym combining both cba and idgaf.

The letters stand for: Can't Be Arsed/Asked 2 (To) Give A Fuck.

Used as a verb:
1. in response to something/someone you can't really be bothered to give a rat's ass about;
2. with an opinion of indifference.

A polite term for shoving a lubricated probe into the Earth's hole to release gas.