Person who is a real bum. Just sits around the house and does nothing. First person when you go to a party that finds a beer and then the couch. When you go to his house is either sleeping or sitting on the couch. Has a opinion about everything. Someone who is lazy. Can be used in many different forms.
Can be used as "Bro get off the couch, your'e being such a Dave" Or turn your friends name into Dave
*Walk into a party* "Yup there goes Dave" (Actually "Mike" walking to the fridge and you know eventually the couch)