I do love Cream of Wheat and I do have a box in the kitchen. I think after I post this Cream of Wheat stuff I am going to go into the kitchen and fire up the old coal stove and run out to the well to get me some water and then I am a gonna make me some of that delicious Cream of Wheat (I wish they were paying me to say that but they aint).
Anyway, here is a Hillbilly Cream of Wheat recipe and an old old magazine ad which proves that cartoon characters have long been moonlighting in advertising. Humans are a commercial creature so it is completely normal for our fictional characters to be so as well.