Sure, but that one stems from a cast iron pot called the Dutch oven (called so because the Dutch excelled at making them). They're cast iron puts that you put

Sure, but that one stems from a cast iron pot called the Dutch oven (called so because the Dutch excelled at making them). They're cast iron puts that you put something into, and often seal under a layer of hot ash for cooking. The childish gag involves sealing someone under to 'cook', just like you would with a Dutch oven.