Also know as a love bite or a hickey,
What is given after sucking a part of the body (neck, chest, etc.)causing the blood vessels to break and leave a bruise.
It is really a way for insecure people to prove to everyone else that they are in a sexual relationship.
Person 1: *points to neck* "Alex, look what Cary gave me, a love sticker!"
Person 2: "Oh, how cute ....you gave your vacuum cleaner a name!"