Chicagoans don't even agree that it should be served on a bun at all. Some prefer their mother-in-law served up in a cardboard French-fries boat. "Sometimes they're called a tamale boat or a tamale sundae," Engler says. Then there's the humdinger, which is a mother-in-law with melted cheese on top, and the Mighty Dog, which he describes as "a chili-and-cheese-covered hot dog cradled in a split tamale, all nestled in a poppy seed bun."
I don't know about you, but I'm starting to understand the part about heartburn.