A term used in a Sarcasmicway to define that somebody/someone does not care about what others are saying, this term can also be materialized by doing the LooserL with both hands and linking both thumbs together to form a square with a missing top, that is the carebox.
Also a variant of the Careface
1.in the internet:
-Did you know that in your lifetime u eat 7 spiders in your sleep?
-l__l<---CareBox, looks empty :S
-Hey have u seen her hair?
-(Carebox with fingers) Nah carebox 'bout it