Called a 'Hater Mark' because only a person who wants to "mark you up" as proof that your are physically or sexually active with them, so you can't easily talk to someone else, is a Hater!
Also called 'hater bites' or 'tramp stamps'.
"My girl, who else? You know she jealous as hell."
"Dude! Don't suck so hard and put hater marks on me! I have church tomorrow and my Grandma will be there."