Working as a translator, you get all kinds of clients, including those who act as if they're doing you a favor by contacting you.
The latest one in this class called me, asked for a quote for 10,000 words to be ready for the day after tomorrow (that's 40 pages of work, and a good translator's average is rarely above 15 per day) and argues about the price. The "crowning glory" was when he told me, "What's 40 pages in two days? I'd do it myself if i had the time."
I told him to go right ahead...