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A sexual act where one fingers one's partner's anus and then gives oneself or one's partner a Soul Patch with the filthy finger. Similar to Filthy Sanchez except with the added douchebaggery of a Soul Patch.
After I finished off she tried to give me the Filthy Sanchez, I backed off quick but she still got me with the Filthy Chet.
by SolarNomad June 30, 2009