I do that at different times as well, estee. People used to laugh at/with me. However, there have been times where I've gotten angry at the person, or even cried.
I have such a sensitive startle response.

I know that it's hard. I think it's connected with my PTSD somehow, but I really don't understand it more than that.
I just wanted you to know that you're not alone there.
kd