Here are the Top Tramp Stamp Definitions From the Urban Dictionary.
Ass Antlers
A type of tattoo, usually worn by women, on the lower back and branching upwards from the buttcrack. From the original German "Arschgeweih".
Tramp Stamp
A tattoo on the lower back of a female. Denotes the perceived correlation between having a tattoo in this location and being sexually promiscuous. The larger the tramp stamp, the more promiscuous the female, goes the common lore. Popular designs include butterflies, flowers, vines, tribal designs, wings....
Whore Tag
A small tattoo usually located on the small of he back of a female. They can be located elsewhere on the female body, but to qualify it must be something very generic like a lady bug, flower, or a design.
Santa Cruz License Plate
tattoo on a womens back above her booty
License Plate
A tattoo located above the buttocks, generally spanning from one hip to the other.
Alley Tag
A lower back tattoo on a hoop-earring hood rat (a girl who sleeps with various men in the neighborhood).
Butt Antlers
A tribal tattoo on the lower back of a somewhat skanky female, another term for tramp stamp. A milder form of the phrase Ass Antlers.
Whale Tail
The whale tail is the shape formed when a thong or g-string rides up high over a womans trousers. Often accompanied by the tramp stamp.
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