Daffy "mushing" Barnyard Dog is a reference to the dangerous 1925 antitoxin serum run from Anchorage Alaska to Nome, Alaska; where there was a outbreak of the deadly diphtheria bacteria. The Iditarod Race, still run in 2023 along the original route, commemorates this event.
Daffy emerges from a hunting decoy before parodying popular comic Lew Lehr's famous catchphrase: "Monkeys is da cwaziest peoples."
All three characters break the fourth wall here.
The good vs. bad conscience argument, shown here with the dog, was a popular humorous plot line in films of all kinds at the time.
Porky's modern postwar kitchen has all the very latest appliances and accessories, including a home deep freeze, oven, stove, fridge and a shiny linoleum floor. The sink has two tubs and one mixing tap, a very new innovation in plumbing.