The Tasmanian Devil, often referred to as Taz, is an animated cartoon character featured in the Warner Bros. Looney Tunes and Merrie Melodies series of cartoons.
To celebrate Steve's victory in a bowling tournament in "Next of Pin", Stan buys a cake decorated with the likeness of Taz, complete with the phrase "Con-TAZ-ulations." When he believes that Steve is likely to turn pro and leave the family, he stabs him and tries to hide the evidence. However, Steve's detective work turns up all of the items used, including a receipt for the cake which Stan tries to eat to hide the evidence, but fails to actually eat the design itself.
In "Hamerican Dad!", Roger, Stan, and Tappahonnock Ham Society go to a Six Flags Amusement Park and see a Looney Tunes Convention. Roger is holding a Taz doll and mentions that one of the members high-fived Speedy Gonzales.