A term for someone who looks at something with no intention of buying it. Predominantly used for people who go to open houses when they have no intention of buying any real estate.
Like Peggy was doing on that episode of King of the Hill.
Besides referring to a person who looks at things with no intention of buying them, a special meaning is that of a person who holds up traffic by slowing down to look at an accident or fire or some other reality.
Traffic on the 405 has come to a standstill because of the lookie loos.