For instance, if you have high expectations for a movie, but it turns out to only be so-so, you're disappointed. You might even decide it sucks whereas without the expectations you may have enjoyed it.
A good example for me is Coke vs. Pepsi. When given the choice, I will generally drink Coke. However, I'll drink Pepsi if that's what's available and be just fine with it. However, if I'm expecting Coke and am served Pepsi, I hate it! I'm expecting one specific flavor and get something else.
A stronger example is that I do not like diet drinks at all. I just can't stand the taste of the artificial sweetener. However, if you tell me that you're giving me a diet drink, I can prepare myself for the taste and drink it. But if I think I'm going to drink regular and take a sip only to find it's diet--I'm likely to spit. :P
So what brings this up? I went to Fazoli's for lunch today. I like trying new things, so I'm often inclined to order something new or different when I go back to a restaurant--or at the very least not order what I had the last time I was there. I also tend to be a pretty visual person, so I'm pretty likely to order something they have a picture of on the menu.
So they've got this new lunch combo menu there. There's pictures of the six options. Each is an entree with a drink. One was a baked chicken with broccoli. It sounded good and different, so I went ahead and ordered it. It wasn't until after I started eating it that I realized it had no actual pasta in it!
Darn you Atkins! It is now unnecessarily complicated for those of us that choose to eat like normal human beings! I guess the fact that the meal noted the net carbs and was the only one pictured with a Diet Coke cup should've tipped me off. I admit I wasn't paying that close of attention, but I was at Fazoli's and I was expecting pasta. That's not unreasonable, is it?
Truth is, it was quite tasty and I enjoyed it. Still, I couldn't help but feel disappointed in some way. In silent protest, I ate four breadsticks. :P