Plus, well, I don't know about anyone else, but I'm *ahem* entirely too sure it's pretty easy to bite someone in the heat of the moment....
Have you been asked prior to the calling about not getting high risk donors (can't think of correct wording). If I remember right, your asked and then sign a form so you do not get placed on the list for high rick donors.
I am guessing that they believe that people with recent tattoos might be at increased risk for developing hepatitis?