Pushing two couches together in order to maximize comfort, warmth, and general awesomeness. DC-ing is the ultimate form of lazing about with friends. Generally used in coed settings in recent years, the double couch has been introduced into single-sex environments with moderate success. Guys accused by peers of being "gay" have generally defended the double couch by explaining just how comfortable and warm it is.
After that rager all anyone wanted to do was have a good old double couch sesh and relax.