(one) can't be arsed

(one) can't be arsed

rude slang One is unwilling or disinclined to make the effort necessary (to do or accomplish something). Primarily heard in UK. I couldn't be arsed to clean all those dishes after dinner, so I just left them in the sink until the morning. Apparently, my kids can't be arsed to put their clothes into the hamper like they're supposed to.
See also: arse
Farlex Dictionary of Idioms.

can’t be ˈarsed (to do something)

(British English, taboo, slang) not want to do something because it is too much trouble: I was supposed to do some work this weekend but I couldn’t be arsed.
A more polite way to express this is ‘can’t be bothered (to do something)’.
See also: arse
Farlex Partner Idioms Dictionary
See also:
  • can't be arsed
  • can't be bothered
  • CBA
  • I'm not bothered
  • not bothered
  • reluctant
  • reluctant to (do something)
  • reluctant to do
  • disinclined
  • disinclined to (do something)