This actually appears on the coffee cup that is purchased in our cafeteria (only in Portland, folks):

Whoa! Contents may be HOT. Of course its hot. It's coffee. If you wanted cold coffee you would have asked for cold coffee, and if you didn't ask for cold coffee and we gave it to you anyway, well that wouldn't be very good either, so we really have no choice but to print one of these warning things telling you it's hot, but we also realize that if you're smart enough to buy K&F coffee, you're probably smart enough to wait a few minutes or put some cream in it or something, and even if you didn't and you've already read this far, chances are your coffee is just about the right temperature to drink now, but be careful anyway.

Thanks. K&F Select Coffee.