This clip highlights the Ford Model T and explains how the invention of the assembly line has made it the first car affordable to the masses. It also illustrates how the assembly line improved manufacturing processes and led to job specialization within factories.
Charlie, a factory worker, struggles to keep up with the production line at a factory, showing how monotonous factory work can be. He then starts to behave unprofessionally, creating problems for the other workers.
The group takes a boat ride through the small intestine, where the workers are not only singing about the intestine but are also part of an assembly line that illustrates the small intestine's function: the digestion and absorption of food.
While in the middle of its boat ride, the group encounters the sexually transmitted infection, gonorrhea. Before destroying gonorrhea with a lit match, Poncho alludes to a symptom of the infection: a burning sensation during urination.