Florida Governor Reubin Askew was so miffed that Young was blaming his ass gas on his state's fruits that he went to the press and reassured the American public that Florida oranges do not turn your anus into a machine gun. In fact, it was the extra potassium that was giving Young his astral flatulence. Two of the astronauts on the previous Apollo mission had developed minor heart problems on their flight, so NASA upped the potassium in the crew's diet on Young's mission, with the unfortunate side-effect of making him zip around the capsule, powered by his rectal discharge. (And yes, we noticed the word "ass" is in potassium. Grow up, please.)
But don't laugh, because farts in space were a major safety concern in the early stages of the space program. Zero-G makes astronauts unable to belch (pushing the gas into the intestines instead), and the low air pressure reduces the threshold for butt burps. All that methane mixing with the pure oxygen environment can create a literally explosive situation, which means that NASA spent taxpayer money analyzing the composition and quantity of astronauts' farts to adjust their diets accordingly. Good looking out, NASA.
"Yeah mom, NASA is great. They have me working on a really ... *sigh* ... really important project."