When you masterbate just enough to make it drip a little. Then chill out for a few so it's all slimy and limp. Then you trail it, ever so gently, across the exposed skin of an unsuspecting victim. This leaves them with a gooey trail leading to a nice warm slug. Oh yeah, the more public, the better.
The party was lame until the slut in the miniskirt found my wet slug on her thigh.
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