Green’s Dictionary of Slang

CBA phr.

also ceebs
[can’t be arsed]

(UK teen) used to express a lack of interest.

[UK]Independent 5 Jan. 🌐 Homegrown expressions reflect teen habits of overstating: devs or devo’d for devastated (mildly inconvenienced); and feigning indifference—wotevs or whevs. CBA or ceebs (short for ‘can’t be arsed’) .