Hanky Codes

    Color coded handkerchiefs to identify sexual preferences within leather, or BDSM community.

    Black: Pain games, Whipping
    Dark Blue: Intercourse
    Brown: feces
    Grey: Bondag
    Red: Fisting
    White: Wanking
    Yellow: Urine

    Which pocket is also important i.e.: left = top, right = bottom

    Here is more comprehensive chart –

    hanky codes