Myself is reflexive: It denotes that the person (me) is doing something to that person (myself) and no other. It's not correct to use a reflexive pronoun unless the recipient of the action is the person doing …

It may also simply mean that you expect the person to be busy rather than free, rather than the other way round. I had always understood 'there's no such thing as a free lunch' as a expression to demonstrate the economics concept of opportunity cost - whereby even if the lunch is fully paid for, one loses the … The fact that it was well-established long before op's 1930s movies is attested by this sentence in the transactions of the annual meeting from the south carolina bar association, 1886 and to-day, “free …