In my experience, I find people don't get the concept of 3D graphics. When I was in high school I used to show my work around. People would ask why I called it "3D" when it was flat (they expect IMAX).

Expaining any processes related to 3D graphics also results in lol. Once, I was chatting with a buddy about modelling and the guy next to me asked me, "What? You model?"

No, I can't get you a photo of Adriana signed by the goddess herself...