When a girl digs her nails into a guys back (who has back acne) during sex; the zits pop & puss gets under the girls nails.

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.

Putting Cocaine in your fingernails and snorting it through ur nose

When you get just the tip

French Manicure- when a guy says “just the tip”