I was talking to my dad about those 1-10 pain scales they use at doctors' offices and how they don't really work and my dad, an engineer, said they should have a standardized needle they stab you with as a benchmark and tell you, "This is 5."
when I was in college I took Intro to Philosophy with this guy named Elliot who was often surrounded by girls, and like three weeks into the term the prof asked if they were enrolled in the course and Elliot, clarifying, said "no they are my guests"