THE AUDACITY! That was so uncalled for. I’m 27, and I’ve been criticized for my stutter. Honestly, I let the negative criticism get to me- but it’ll continue to linger if you let it. Establish those boundaries and re-evaluate your friendship with the guy. I don’t see anyone criticizing him for being ignorant. No real friend would make a comment like that- not even a sane person. Can’t expect everyone to have perfect speech.