If you have a particular type of stutter where you might have involuntary extraordinary movements around your mouth and jaw area (related to stuttering obvs) and especially if you're meeting the other person in a club environment you might be wise to bring up the stuttering earlier so as not to have them mistake you for a drug user (which apparently might display similar movements). Unless using drugs in your circles is considered cool, that is. Haha, just an anecdote from experience.