Re: Sales weasels.
It says something that the one time I know of where a sales weasel lost their job for promises that couldn't be delivered, I didn't believe it to be true until we got the e-mail.
It turned out he'd made the mistake of lying to the company as well as the client. "Oh yes, I've got *loads* of customers if we just develop it like this". After a lot of development work, we discovered, guess what, no customers.