Room for Cream

If the kind person behind the coffee house counter asks you if you need room for cream and you happen to prefer it black, do you answer "no, thanks", or do you answer "yes, please" to avoid the inevitable burning of the lip as you bring the cup towards you and realize that it's filled to the absolute fullest?

One could explain to the kind person that they really don't care for cream and, that regardless of this, they do want a little room at the top so they can take that first sip without becoming extremely annoyed by the cup of fine java that they -- at one time -- we're looking forward to enjoying. To avoid this kind of explanation, one simply states that they would like room for cream. The only potential problem with this is that when you walk straight out the door without getting cream, the kind person might wonder if you forgot your cream, and proceed to chase after you with a carton of half-and-half, proclaiming that "they've got the cream in case you didn't see it on your way out", at which point you will just end up explaining to them that you really don't like cream, and that you really do like to be able to tip your cup back to at least a two-degree angle instead of having to stand frozen with your lips on the top of the cup, like a puppy licking water off of the flat ground, until there is sufficient space in the cup to allow such a feat.