Two things going on here. First it’s the anxiety, fear, anxiousness, and the first time the stammer is probably meeting this man for the first time. I am the same way, when it comes to meeting someone new. Secondly, I can almost assure you this person has never had any interactions with a stammer. So, his remarks and reactions are common and rude. This is also a great opportunity to do a wee bit of education to this man about what stuttering is and how a non stammer should react when they come into contact with a PWS.