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A sex move involving eating out a girl while at the same time fingering her asshole with a dreadlock, giving the resemblance of a horses tail.
Yo, I got that bitch so wet last night she was fuckin beggin me to give her a Marley Horse.

That's the last time I'm givin that bitch a Marley Horse. I got dingleberries in my fuckin dreads.
by magzzzzzzzz April 06, 2009
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