Hallway-Responsibility - Rid#2Online version PBIS Hallway Expectations - Responsibility - Riddle #2 by Melissa Kohn 1 Three words: K _ _ _ H _ _ _ _ C _ _ _ _ Hints 1 Opposite of dirty is ? 2 No littering in the hallway means we are going to do this... 3 First word clue: Rhymes with sheep.