CBA
UK slang humorous uk/ˌsiː.biːˈeɪ/ us/ˌsiː.biːˈeɪ/
懒得做 （表示自己嫌麻烦， 而拒绝对方的提议，can't be arsed的缩写）
abbreviation for can't be arsed: used when you do not want to do something because you feel lazy
"Do you want to go out?" "CBA." “想出去转转吗？”“懒得去。”