A Riddle about Good and Evil

Riddle Question: How is it true that if Good is Evil and if Evil is Good, then, Good is Good and Evil is Evil? Hint: you must use symbolic logic to answer this riddle.

A Bill Fejfar Plumbing Joke

Joke Question: What does Bill Fejfar the Plumber, of Fejfar Plumbing in Yankton,
South Dakota, do with his plumbing business?

Joke Answer: Bill Fejfar the Plumber spends his time plumbing the depths of reality.