A friend who is way too much of a social butterfly--knows a lot of peeps and is constantly stopping for quick heart-to-hearts with everyone they run into (this is annoying when you want their complete attention or you are trying to get somewhere on time)
one who defeats homelessness by relying upon a series of friends' couches. A friend or aquaintance who frequently crashes at your house. Can be due to inability to pay his own rent, frequent and/or persistent intoxication, or reluctance to return to his own dwelling. See A Brad
After Brad left and I had the upholstery professionally cleaned, I wasn't about to open the door to any more couch surfers.