Chili Tonight, Hot Tamale

For tomorrow's party, I made my traditional pot of chili. Over the years, it has slowly evolved. This time, I borrowed an idea from the winning recipe of Boston's Firehouse Chili Cook-Off. Instead of browning the ground beef, he grilled the ground beef as hamburgers, then broke them up for the chili. I did the same thing, but used ground turkey. Instead off little pieces of ground turkey, you get visible chunks of meat.
( Recipe )

Does anyone know where "Chili Tonight, Hot Tamale" comes from?