<p>It depends on how much your embarrassment is blowing up your performance in retrospect. If it was bad but not a disaster, “somewhat awkward” shouldn’t break you. If the interviewer writes a report like “seems like this kid didn’t warm up to me. Wouldn’t strongly recommend,” that won’t hurt you much. The interviews are not usually very important because they’re so unstandardized. On the other hand, if you really did badly enough that the interviewer actively recommends you be rejected, that might break you because the interviewers so rarely do that.</p>