Going AWOL on your job to have a clandestine affair.
"Where has Joe been for the last three days? He didn't tell us that he'll be taking time off!"

"Uh... He's hiking the Appalachian Trail."

"Oh. In that case, where's the pink slip?"
by L-R- July 17, 2009
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"Hey, where did our governor go?"
"He told me he was hiking the appalachian trail..."
"Hope he takes protection."
by girlmain July 14, 2009
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An unnecessarily bizarre and implausible cover story for marital infidelity.
I'm sorry, Carol, I can't go to your mother-in-law's Tupperware party this evening. I'm hiking the Appalachian Trail with that new secretary from the office... in Argentina.
by Abolish the Fed June 24, 2009
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To travel to Argentina to bang your mistress, while your gubernatorial staff back in South Carolina lies to the press about your whereabouts (see Sanford, Mark).

To cheat on your wife.
"Jane filed for divorce when she caught her husband hiking the Appalachian Trail with the babysitter."
by Palmetto Ghetto June 24, 2009
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Spending time with your mistress.
"Where are you going, Governor?"
"I'll just be hiking the Appalachian Trail with Lupe for the next few days."
by hayes6 June 24, 2009
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What you say you did when you come back from being missing for several days in order to hide what you were really doing.
"Jim, why haven't you been at work the past 3 days?" "Oh, I thought I'd... uh... hike the Appalachian trail!"

"Bob, why did you come home late last night?" "Oh I thought I'd hike the Appalachian trail on the way home!"
by SonOfALink June 24, 2009
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The Governor of South Carolina had an affair with a woman from Argentina. As his cover story he told everyone he was hiking the Appalachian Trail. To sum it up it is slang for having or having had sex.
"Hey have you seen Mark?"
"No but I heard he's with his girlfriend behind the bleachers. They're hiking the Appalachian Trail"**winks**
"Oh that dirty bastard."
by ashesfallingdown June 25, 2009
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