Andrew from Dugald:

Archaeologists have unearthed a heretofore unknown weapon while digging at Machu Pichu. Designed to stun ememies instead of killing them, the slingshot-like device used potatoes as ammunition! Dubbed " the Inca-pasi-tater", it has led them to wonder if a "Machu Pea Shooter" is laying there, just waiting to be discovered.