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1.
n. a loose woman who likes to hang out - like a dog's tongue. A woman of loose virtue.
Usually in her late teens to late twenties, a dog-tongue "hangs out" at bars and clubs with other dog-tongues.
Dog-tongues don't take relationships seriously. They like to lead (usually) older and wealthy men on for their own ends before dumping them and moving on to the next victim. Dog-tongues are predatory, using their superficial good looks to snare men and drag them from their existing partners, often with heartbreaking results. A dog-tongue can be compared to the mythical siren.

"Look at her! She's a real dog-tongue!"
"Saturday night - the dog-tongues are out again"
by DanEvans April 05, 2010