2. An outcast of the group, concluding himself as a smelly, poor kid.
NOTE: The subject that you may call a "ranky-bum" may also tend to be weird looking, ex. (ugly haircut, which would be a mushroom cut, fat wierd cheeks with a weird smile, deep wierd creepy, eerie voice, etc.)
2.Shut up kid , it doesn't matter what you say, ur just a Ranky-Bum