You go to a hotel to meet a provider. You get out of your car and head for the room and an undercover comes up to you and asks " Do you have a room rented here ?"
" Here visiting a friend", but you don't know your friends real name.
all curious "What's this about?" "What's going on?" "are y'all having some kind of issue inside here?" and be MORE that willing to turn about-face and make other plans. (i.e. find another bathroom/coffee shop).