Ever forced yourself to eat a gross dinner out of politeness?

At one time or another, everyone's been served a dish that's just awful to the point that you can't force it down, whether because it just doesn't agree with your tastes, or because it's not prepared properly. To be polite, you can't exactly say it's gross and you can't eat it. Swallow a couple of bites, try to arrange the food on the plate so it looks more "touched" than it was, and comment about how full you are--you just couldn't eat another bite.