Does this make me a bad person?
It really irritates me when random authors come in with copies of their random reference books and attempt to hand-sell them to me* at the front desk even though I've explained multiple times that 1) I am not the reference librarian and 2) the reference librarian is not available and that 3) yes, I am perfectly willing to give her his information.
*"And on this page, just look at this photo! That couple was married for 56 years. 56 years, can you imagine?" "Well, yes. I sure can. And the patrons behind you in line are probably feeling familiar with the 56-year feeling, too..."