Notorious YouTube prankster Jack Vale attended NAMM 2014 and staged the 'Paranoid Name Dropping Prank,' which involved him talking loudly on the phone and bringing up people’s full names in conversation as they passed by. As Vale notes, "it made them paranoid... even though they wore huge name badges."
In some cases, Vale even goes into describing physical attributes or what a person is wearing, which makes it seem like someone is on the lookout for them. Naturally, this makes people whip their heads around when they hear even just their first name being called.
Most people seem unsure of whether they should introduce themselves or not. If people are curious enough to ask if Vale was talking about them on the phone, like a good prankster he casually introduces himself and acts as if he was referring to another set of people… with the exact same name and characteristics.