Ben...? Benjamin...?

We went to the doctor's office yesterday because Ben hasn't been feeling well.  The place was crawling with kids!!!! So when they call Ben, we get up and walk towards the nurse. At the same time a high school student with his mom get up and go toward the nurse. So we both look at her thinking,  which one of us is it? So she clarifies by saying... "Benjamin?" Mike and I are cracking up so hard we just go sit down. A few minutes later she comes back out and says "It was baby Ben".  Maybe next time you should clarify by saying the last name. :P