When a clerk or sales associate follows you around the store so they can ask you if you "have any questions." Usually they*just happen* to be folding clothes right next to you, and when you walk to a different part of the store, they miraculously appear right by your side, re-folding shirts, looking at you intently.

A pubic hair piece. A toupee for the pubic area/genitals. In the 1700’s when mercury was used to treat sexually transmitted diseases (Gonorrhea or Syphilis) one of the side effects was the loss of pubic hair. To disguise this condition, that was not cured by mercury, a Merkin was employed.