I hear this expression said with the incorrect "could" more often than than with the correct "couldn't." I attribute this to one of the following: - the speake

I hear this expression said with the incorrect "could" more often than than with the correct "couldn't." I attribute this to one of the following: - the speaker is using wry sarcasm, although the inflection is usually wrong. - the speaker actually does care a bit. - it's easier to say "could" or it's habit. I try not to be a pedant about this, but often fall. Yeah, I'm fun at parties.