|1.||Can't be arsed|
To be seriously demotivated.
To be disinclined to get off one's arse.
To be unwilling to do something.
I just can't be arsed
|2.||Can't be arsed|
A term used when one really cannot be bothered/wants to/has to do something.
Mum: "Clean yer room."
ME: "Can't be arsed!"