For reference: The Barber Paradox.
The Barber is he who shaves all those, and only those, who doesn't shave themselves.
Now the question is: Who shaves the Barber?
The paradox being that if the Barber shaves himself he must be one of those who doesn't shave themselves, and if he does shave himself he cannot be one of those who the Barber shaves.
So my question is: Is this really a paradox or simply a case of category error?
Because a barber shaves people for payment, yet he would not pay himself when he shaves himself, so therefore when shaving himself he is not de facto "The Barber". The Barber is in fact primarily a person and secondarily (sometimes) The Barber.