I was working in the drive thru and I stuttered taking telling this man his total and they busted out laughed and told me I need to learn to talk. Honestly I have countless stories like that, being from a small town doesn't help because I'm literally the only person in my area with a stutter so I was easily singled out. People have also had a tendency to assume I'm stupid and talk to me like so because of my stutter as well which is beyond frustrating.