This same thing happens to me too.

On Wed, 24 Feb 1999, Amy E Scherer wrote:

> I just try and keep a sense of humor about the whole thing -- I have had
> some pretty funny experiences, specifically in a class situation when my
> professor randomly called on students...regardless of whether they
> had raised their hands or not. As you can imagine, since I had no idea
> when my professor was going to call on me, I was rather "jumpy" in that
> class! At the beginning of the semester, this particular professor thought
> I was scared of him! :) I later explained the situation to him. But, I've
> got to admit that it was pretty amusing!
>
> ~ Amy
>
> *******************************************************************************
>         "I don't ask for a lighter load...just broader shoulders".
>
>                         -- Michael J. Fox --
> *******************************************************************************
>