* Tennessee: A reference to the American state, possibly chosen for its association with the American South and its warm climate, which contrasts with the icy world of a penguin.
* Tuxedo: A play on the penguin's formal, black and white plumage, which resembles a tuxedo.
Therefore, "Tennessee Tuxedo" is a clever and humorous combination of a geographical reference and a description of the penguin's appearance.