Short for cannot be bothered. A word part of English slang typically used in the West midlands.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

A term of regional english slang which is short for can’t be bothered. Commonly used in the west midlands.