I once did a Flash banner for a guy. It was really nice, had graphics, text effects, everything... He paid me good money for it. A few days later, he contacts me and informs me that the forum he wanted his banner on wouldn't accept flash .swf's. He asks me for an animated gif. I tell him a gif that encompasses all the animation the flash file does would amount to about 2 MG's, plus you wouldn't have the interactivity I incorperated into the flash file. He later settled for a simple still jpg image.

Another one:
Him: Hi, I need a game designed in Flash.
Me: Alright, what kind of game are you looking for?
Him: 2D first person shooter where users can submit their scores, 10 levels, original music for each, 5 different guns, and a fancy intro animation.
Me: Ok, how soon do you want it?
Him: This Wednesday. (two days from now) And I can't pay more than $50 for it.

-_-