When your partner is menstruating. go down on her and begin eating her out. then give her a big wet kiss after. congrats, you just became a red wing lieutenant.
friend: why us ur face covered in blood?
me: i just become a red wing lieutenant!
Much like Red Wings, one earns their Red Wiggler by sucking the period blood off the penis of a man who just had sex with a woman who was on their period.