Hiking the Appalachians 

Code for cheating on your spouse, significant other.

"If anyone needs me, I'll be hiking the Appalachians." -Gov. Mark Sanford

Guy 1: Dude, where were you Saturday night? I thought I'd see you at the club with your girl.
Guy 2: Nah, man, I was hiking the Appalachians.

Hiking the Appalachians by Bert-Bert June 24, 2009

Hiking in the Appalachians 

Euphemism used mostly by politicians for spending time with a South American mistress, most commonly Argentinian.

Sorry I didn't call, dear. I was busy Hiking in the Appalachians and couldn't get phone service.

Hiking in the Appalachians by capt. planet June 24, 2009