Possible Clues:

• Maureen outside home after party may be a 'faller-over'
• Black-and-white game tile
• Piece in game removed from board, ominously
• Logo on some pizza boxes
• Item with between 0 and 12 spots
• Bad mood in one brought down with others?
• Tile that falls to some effect
• Certain pizza chain logo
• Two-ended tile
• Heading for ditch, pal knocked from top of horse -- faller in effect?