Flea Collar
When a woman wears an engagement/wedding ring in order to keep away unwanted attention from men.
Man 1: "She's married man! Look at the ring on her finger."
Man 2: "Nah man, that ain't nothing but a flea collar. She's trying to keep all the bugs off."
Man 2: "Nah man, that ain't nothing but a flea collar. She's trying to keep all the bugs off."