Noun: The act of being homeless, i.e laying in an alley to rest. Caused by the ingestion of too much liquor or other substance such as marijuana, crack, pcp, etc.
Joel: Damn look at River sleeping there he is homelessing again....
River: Leave me alone im tired and need to sleep
Joel: River! This is where you have been sleeping the last three weeks!
River: I,ve lost all communication with the outside world. Now give me a hit, homeslessing is the new trend in this day and age.