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when a guy sticks his dick up a girls ass and wipes it on her upper lip. this is commonly confused with a dirty sanchez, when a guy fingers a girl and wiped his finger on her upper lip
Bob's girl loved when they performed dirty rodruigezes.
by C-Bit May 11, 2006
When having anal sex, pull out your penis and wipe it just above ur partner's top lip resembling a dirty mustache.

it is often confused with its cousin the dirty sanchez where you use your finger.
I gave Mindy a dirty rodruigez.
by babaghanoush May 13, 2006