a. The Klumps clearly have gas. What is it about certain foods that causes gas? What parts of the digestive system are involved with flatulence?
b. What sorts of foods were the Klumps eating? Is it realistic to think that the dinner is actually what is causing the gas? How quickly does the digestive system react to various foods in terms of producing gas?
c. What role do bacteria play in the production of gas?
d. If you are wanting to focus on the actual chewing process, students could look at the rate of the food consumption and its possible effect on producing gas.
e. Colon cleansing is frequently done at various spas (per Mama's comments below). Is there any scientific evidence that colon cleansing is effective?
Mama Klump: I think I do remember hearing somethin' on TV about colon cleansin'. They say everyone should have one. I'm thinkin' about gettin' me an appointment and go down and get my colon cleansed thoroughly.
Papa Klump: You want your colon cleansed? Fine, I'm gonna clean mine! [Farts.] There, my colon is clean. My colon is squeaky clean!