Sneak away to meet your mistress. ("Hiking the Appalachian Trail" is the first explanation of where South Carolina Gov. Mark Sanford was when he disappeared.)
"Has anyone seen Jawann? I've been calling and texting him for three days and he's not answering."
To be unfaithful to one's partner e.g. in an extramarital affair. Named after South Carolina Governor Mark Sanford, who was said to be hiking the Appalachian Trail, when actually he was visiting his mistress in Argentina.
"My husband has a lot of "meetings" and "conferences" to attend to lately. I think he might be hiking the Appalachian trail."
To have a sexual encounter or affair, named after the infamous disappearance of South Carolina Governor Sanford, originally thought to be hiking the Appalachian Trail, but was having an extra marital affair in Argentina.
I wanted to Hike the Appalachian Trail in the back seat of my dad's Lincon after prom, but my date wasn't drunk enough.
A euphemism for a long-distance bootycall to Argentina.
Additional points if you 1. are a politician 2. lie to an entire state/nation 3. Hail from South Carolina 4. Utter the words "I have just spent the last five days of my life crying in Argentina".
"I went hiking on the Appalachian Trail aka got me some Argentinian tail"