In our weekly installment of Clients from Hell, a hilarious collection of anonymously contributed c lient horror stories from designers, we present to you, "Paying is Professional."

Me: Sorry, but I simply won’t accept any more bookings from you until you pay your last two invoices. They’re both more than a month past due.

Client: Well it’s just unprofessional of you to leave us hanging like this.

Me: I’m sorry, but getting paid for your work is kind of the definition of professional.