You need as many pairs as you have supplies for, which are soda, squirt guns, and optional protective gear.
The goal is for each pair to have a squirt gun filled with a soda. One person tries to unload the entire contents of their squirt gun into the open mouth of their partner standing 5-10 feet away. Have three or four pairs competing against one another.
Option: Give gear to the one taking ‘fire’…swimming goggles for their eyes and a rain poncho to cover their clothes. If you are worried about a sticky situation, use diet pop because it isn’t sticky. You could put different liquids in the guns depending on how daring your students are. You could do it as a relay with one person filling the gun, another shooting, and another swallowing and burping.
Added by Mark Janzen
See Alka-Seltzer On The Head Duel on Up-Front page.
Jonathan McKee is the author of over twenty books including the brand new The Guy's Guide to FOUR BATTLES Every Young Man Must Face; The Teen’s Guide to Social Media & Mobile Devices; If I Had a Parenting Do Over; and the Amazon Best Seller - The Guy's Guide to God, Girls and the Phone in Your Pocket. He speaks to parents and leaders worldwide, all while providing free resources for youth workers on TheSource4YM.com. Jonathan, his wife Lori, and their three kids live in California.