To have an extramarrital affair. Stems from the disappearance and subsequent reappearance of South Carolina Governor, Mark Sanford(R). Gov. Sanford was thought to be hiking in Appalachia. In actuality, he was having an affair in the South American country of Argentina.
Girl, I just saw Susie's man hiking in Appalachia.
by Chatnoir80 June 24, 2009
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