I have an exaggerated startle reaction. It might have to do with sound sensitivity, too many pain receptors, too many touch receptors, or Anxiety Disorder. (Asperger's officially diagnosed).
When I am in the bathroom and someone tries (and fails) to open the locked door, I usually involuntarily scream. They pull the door so hard, the whole litterbox shakes, and it is loud.
When someone surprises me by calling me (which they sometimes do when they want a cart from me), it often scares the s**t out of me. The front entrance usually has plenty of carts. Otherwise, the rest of the parking lot has carts. Customers (and coworkers) often: entitled, lazy, inconsiderate, loud, rude, impatient, disrespectful. But "customer always right". (rolls eyes).
Anyone else?