I read the title of the post and immediately thought of that episode on Sex & The City where Miranda's guy friend from LA did it at a restaurant with his steak.
I don't want to make it seem like I'm making light of the situation though. I have to admit that I've done it before too, but only when I've eaten a meal, keep having more.. and then realize I'm actually full after I'd put food in my mouth that I don't want or need anymore. And obviously when no one else is around.
I wouldn't make a big deal of it... just don't let it become a habit.