This does look like fun, but we don't recommend you give it a try.
According to Urban Dictionary, "couch surfing" is a cheap form of lodging used mainly by college students or recent college grads, where one stays on friends', family's or acquaintance's couches rather than a hotel.
While couch surfing in that sense isn't literally surfing on a couch, leave it up to the rednecks to turn the term 'couch surfing' into well...actual couch surfing. In this video, we see a bunch of country boys being pulled behind a pickup truck like they're tubing behind a boat. Hilarious!