To wander aimlessly for the giddy thrill. For background information read Jack Kerouac's "On The Road." Often done while singing "Four Dead in Ohio" by Crosby, Stills, Nash, & Young or "Proud Mary" by Creedence Clearwater Revival.
An interpretation of the classic Martini drink thought to be popularized by the post-beat modernist movement. A Kerouac, in traditional form, is 15 parts vermouth with a cold splash of Gin. Kerouac himself was known to "pour a cold glass of Vermouth while glancing at a bottle of gin."
"Are you serious?...Wow...OK, one Kerouac...comin' up."