Some years ago I looked at the expression “can’t be arsed” (that is, can’t be bothered) and the way it has been (mis)construed, notably by Americans, as “can’t be asked.” A couple of developments since then. First, the OED moved its first citation for the expression to 1968 (from 1978, as I recall). In Hunter Davies’s 1968 book The Beatles, Paul McCartney is quoted as saying: “If they can’t be arsed waiting for me, I can’t be arsed going after them.” In the same book, John Lennon says, “I like ‘A Day in the Life,’ but it’s still not half as nice as I thought it was when we were doing it. I suppose we could have worked harder on it. But I couldn’t be arsed doing any more.”
Second, I found a very long, multi-year thread on the wordreference.com forum debating the merits of “can’t be arsed” and “can’t be asked.” I’ll spare you the details, except to say that one commenter found a 1979 article in which the American pianist Keith Jarrett was quoted as saying, “There are things now that I can’t be asked to do that maybe five years ago I would…” Now, that raises the question of whether Jarrett actually said “can’t be asked” or whether he said the British “can’t be arsed” and the interviewer mistakenly rendered it as “can’t be asked.” By a stroke of luck, that 1979 interviewer, Mikal Gilmore, is a Facebook friend of mine and I asked him if he remembered what Jarrett said. In a kind of Annie Hall-Marshall McLuhan moment, he responded quickly and definitively: “He said ‘asked.’”
I can understand why Jarrett and others would have made the change. First, most British people pronounce “arse” and “arsed” without voicing the “r,” so it sounds like they could be saying “asked.” Second, “can’t be asked” actually makes more sense than “can’t be arsed”—suggesting the idea that I won’t do something even if someone asks me to.
Perhaps for those reasons, “can’t be asked” apparently spread to the U.K. quite some time ago. A commenter on my original post said, “Working in and with South Londoners in the late 90s, I can confirm ‘can’t be asked’ as a thing, albeit pronounced ‘can’t be axed’. Actually more common at that time than arsed…”
And in 2007, someone posted a definition of “can’t be asked” on Urban Dictionary: “Used by some Southern UK speakers in place of ‘can’t be arsed’ because they misheard it, or want to be more polite.”
Helpfully dispelling any “arsed”/“asked” confusion is the version that has apparently become popular among young people on both sides of the Atlantic in their texting and commenting: the initialism “CBA.”