Not Quite "Spear and Magic Helmet", But Close

For you SCAdian heavy fighters out there, or just people who know heavy fighters.

1. Attach water balloon to top of helmet.
   
2. Armour up.
   
3. Apply blindfold and helmet.
   
4. grab your sword and start wailing away at each other until somebody's water breaks.

I call it piñata dueling!