"Don't let your nose touch the butter."

I guess if your face is at the same level as the counter and you really want to see what is going on, then a statement like this is appropriate. Or if you're a chef training another chef and offering advice on food handling etiquette, then this might slip out. Or if you're an adult doing some interesting stunts with breakfast foods then this would fit as well. So it looks like I'm saying that maybe this is one of those remarks that can really be all-encompassing. Hmm, I wouldn't have initially thought that, but after some consideration it seems as though what I said could be quite useful in a variety of circumstances. But then again, doesn't that apply to all the previous quotes as well??