What If Wild Animals Ate Junk Food is a funny video where we can see the negative effects of junk food about wild animals (if they eat it, of course).
Although instead of junk food, it seems that have inflated with helium. I die laughing every time I see it.
This reminds me of Wall-e, the film, which were all fat and round for junk food and a sedentary lifestyle.
Just a note. There are healthy fast food. What makes fattening is not the processing time, but rather the ingredients.