I have had tables at Gun Shows for 35 years.The dumb ones are exasperating but sometimes humerous. The ones that come back and work over and handle a a gun for 30 minutes may be the most frustrating. I had one idiot in Houston come back time after time to look at an 1894 Remington and move the top lever back and back and back and forth until he broke the top lever spring. I don't believe from his appearance that could have bought a cap pistol. He then walked quickly away without an apology.