Top Definition
a tattoo on a young slutty girls back just above (and sometimes going on to) her butt or beltline.
"you see her tatoo, she's got a nice slut mark"
by fester789 February 02, 2006
2 more definitions
Blemishes left on a prostitute's body (mostly arms & legs), usually received from her pimp or "mac daddy"
Rachael wears long sleeves to hide the slut marks Jose left on her.
by Lolly Gagger April 11, 2007
as the friend of Brooke Hogan said; a tattoo on the lower back (above the ass).

yeah, when a girl has that tattoo, it's usually not hard to convince her having sex with you ;-)
Guy 1: My GF is going to get a tattoo with my initials.
Guy 2: Cool! Where?
Guy 1: right above her ass
Guy 2: ok... cya later
(Guy 2 calls Guy 3)
Guy 2: the GF of Tom (?) gets a slutmark!!
Guy 3: In 2 months we can bang her OGC!
by RidDlcK February 28, 2010

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