I once had a business meeting with a non-Jew (turns out he was a blonde Aryan). He took me to a German restaurant. He ordered bacon sausages, I ordered a black coffee in a paper cup.
Unfortunately the only seats available in the crowded room were at a little table, right by the large front window. To make matters worse an obviously non-Jewish woman (also blonde) sat down next to us.
I wondered what a passerby would make of me in my cuppel seated at a window-side table drinking coffee with an obviously non-Jewish couple eating their obviously non-Kosher sausages.