When someone without a permanent residence takes advantage of another person, usually with romantic intentions, and then dumps that person as soon as they get the material object they wanted.
For example- a guy whom has been sleeping on a girl's couch (because he doesn't have a place of his own) talks a girl into buying him a winter coat because he doesn't have one and then dumps the girl as soon as she buys one for him. Then she has been "homeless rolled".