Often experienced after a satisfying meal, especially of the "all you can eat" variety, "hobo full" is the feeling of being so completely sated that you desire nothing more than to lay down on the nearest possible flat surface (park bench, grassy knoll, sidewalk) and take a nap.
Feeling "hobo full" is generally accompanied by questions regarding ones ability to simply lay down, "Will anyone mind if I nap here?", which is almost always overruled by a welcoming ratty-sweatshirt pillow and a well-placed newspaper blanket.
"Wow, lunch was delicious but now I'm hobo full. Time to find an empty lot to nap in... oh wait, there's space on that lawn."