Possible Clues:

• Downpour for champions
• Trail of paper shredded for union?
• Alternative to rice etc if not cooked
• A handful going up after the match?
• It's targeted at newlyweds
• Rip off iron on the wagon? One gets stuff to throw at people!
• Alternative to rice etc if not cooking
• Paperwork is all over the place and not welcomed for marriage ceremony
• Paper thrown at union meetings
• Rain on one's parade?