Client: "Can you make the background constantly change colors? I want people to know that we are fun and exciting."
Me: "People will think you are trying to give them a siezure."
Client: "Look, just try it, and if we don't like it, we can change it later."
Me: "Well, this will really, really make it hard to design the rest of the site if the background color is constantly changing."
Client: "Then make the rest of it change, too."
Me: ".........uhh, are you sure that's what you want?"
Client: "Yes"
<two days later>
Client: "This looks like crap. Why did you make it like this?"
Me: "You asked me too."
Client: "If you knew it was going to look like this, why did you even bother?"
Me: "Because I charge you by the hour."
Let's just say that now he's a lot more picky about what random ideas he makes me carry out.