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When a girl rides you regular style (not reverse cowgirl) facing you and sticks her finger up your asshole. Usually pronounced with an accent (think Spanish) so slider sounds like "Sly-ther"
When was the last time you had El Monterrey Slider?; well that's not long enough my friend
Man Homes I just had an El Monterrey Slider and Chit does her finger stink!
by Irishguy1 November 30, 2010
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