The assumed origin of 'can't be arsed'. 'Can't be asked' does make some more sense, and the americans can even say it without it sounding too bad.
Teacher: I'm giving you another assignment that's due next lesson
American exchange student: I can't be asked to do that bro
Student: Man said asked
7👍 6👎
See 'Be for real'.
Person A: I'm gonna get an A* in this test
Person B: Be fr.