In the 1960s, ads appeared in US comics and magazines for “Monster Briefs in Color!” for the “guy who has everything!” Everything but a girlfriend, perhaps?
The garish men’s undies were adorned with reproductions of covers from Creepy, Eerie and Famous Monsters of Filmland and made from “100% stretchable nylon”. So, presumably the guy who has “everything” also had sweaty, itchy tackle. Surely, another guaranteed way to attract the opposite sex?
Still, “a fashionable monster wouldn’t be caught dead without them”…
Adrian J Smith, Horrorpedia