A form of pill popular in early 90s rave culture, where extacy was supplied in red and black capsules, named after the 'Beano' comic strip character. see also Rhubarb and Custard

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.

A sexual situation in which a man removes a condom after thorough use(filled with semen), places the filled condom in a slingshot and launches the payload at an unsuspecting female companions face. The condom hits the woman with a humiliating, stinging and resounding slap. The male then shouts: "Dennis the Menace, bitch!"

this is used as a slang term for anal, or "butt sex"

When you slingshot an used cum filled condom