1. A cheap form of lodging used mainly by college-students or recent college-grads, where one stays on acquaintance's couches rather than a hotel.
2. What someone who can't afford rent on their own and/or can't find roommates quick enough does when they are "between" places
1. dude1:I'm hittin' up NYC this weekend.
dude2:Damn, thats gonna be expensive.
dude1:Not rilli, my boy from college just got a job and a place in Manhattan, and I'm couch surfin'.
2. person1: Whats up with Joe, he's been here like all the time.
person2:he just broke up with his girl, and doesn't have a place yet, so he's couch surfin' here 'til then.