And what about those 'spud guns' - potatoes really hurt!!?
Stick a potato down that barrel, fill up the combustion chamber with your explosive gas of choice (aerosol products containing butane/propane propellants are popular) and fire it off with a charcoal grill igniter. Yeah, that spud might leave a mark. :)
Hilarious!! Yea, a whole potatoe would do more than hurt!! I meant little spud 'buds', not scud spuds!! LOL.