Frenchman Jeremy Marie has no wife and no job, so he chose to travel the world by hitchhiking. From a hard-hitting interview on KOMO News:

His technique?
“I’m very ‘old school,’ so I like to stick my thumb out,” Marie says with a grin.
But his thumb hasn’t worked everywhere.
“In some Muslim countries, it’s insulting, so you change the finger,” he says.
Watch what finger you change.

Just the concept of hitchhiking around the world prompts several questions, like ‘how do you hitchhike across an ocean?’
“The catamaran, and sailing boats,” he replies. “Because there’s less cars than boats on the ocean.“

He was supposed to back home last month but after two years he isn’t even halfway around the world.

You can follow Jeremy Marie and admire his thumb on his website.