This is my boss. It took 10 years to finally make him realize that just because he thought it up, didn't mean I could create it in minutes.
OMG this is so my ex-boss, only she put it like this: "I know exactly what I want!" - and changed it every 5 minutes, making me do the same job 5 times. Then when I quit after one of those cases, I've been told that she communicates clearly, I have a problem.... Well, all righty.
These clients are the worst! We're not machines, we need breaks too!
I hate dealing with people like this
I have happily dumped clients who wanted dumb fonts and terrible color combos. To paraphrase my boss, "We put our company name on this product, we are not making shit for clowns."
I have literally broken keyboards for this kind of shit.
Counterstrategy: Give them examples of other work that is similar to the final product, charge them for those example-sheets.
These clients will also wait till the last minute to pay.
These are my favorite clients and usually they are the happiest and most grateful clients when they see the final product.
Also stick to the original quoted price unless the client agreed in writing to changes that could change the price. I am this client and there is nothing worse than being quoted a price and then the final price is more because of changes that I never agreed to or costs they didn't foresee.
When I worked in screen-printing. I had a client who actually thought we took all the hand-drawn ideas that she brought in, and we would just put them into a magic machine and her shirts would be produced right there on the spot.
This one is always a loser because eventually someone above all these people comes in and tells you the whole thing has been cancelled.