Ha! I got a kick out of this. I don’t want to wear a beard, lol. I have all of the power I need inside of me, and everybody sees it!
As someone who has a stutter when nervous or upset, I can say that it's definitely more repeating words and stumbling over um's and uh's than individual syllables. Don't overdo it, either. There are ways of self-correcting when it gets too bad. When I have a hard time getting my words out, I usually force myself to stop for a beat, then start over with new wording that is more succinct or easy to say.
What's the worst that can happen when on road trip (this mostly focuses on the US, but many can apply in other countries)