We all know the feeling. It comes in airport shuttles and on mountain passes, in subway cars and deep in tangled jungles.
It comes from breaking out of routine and finding yourself some place new, where anything can happen.
The feeling is a silly sort of glee, a giddy wave of adrenaline that tickles your stomach and crinkles the corners of your eyes and makes you want to yell and wave your arms and act like a fool.