Bent out of shape…

Having concluded that our favorite way of preparing sweet potatoes (aside from sweet potato fries, or sweet potato chips... or) is to leave the peels on and cook them in the microwave, and then wrap them tightly in aluminum foil so that they continue to cook, it is imperative that the sweet potato be stabbed repeatedly—and deeply—with a fork all over to make sure there are enough holes to let steam escape so that it does not explode inside the microwave.

Sweet potatoes are somewhat denser than white potatoes...

 and it is best not to use a cheap fork to do this.