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Sleeping on the floor without the use of a pillow, blanket, or other padding. Can range from a quick nap to a full night's sleep. Similar to the sleep patterns of a homeless person, who sleeps on the ground.
Zeno: "Dude, all the beds are full. Where are you gonna sleep?"

Justin: "No worries. I'll just hobo nap on the floor."
by AinzDizzly April 20, 2010