The foods that prolong life and increase purity, vigour, health, cheerfulness, and happiness are those that are delicious, soothing, substantial and agreeable... Foods that are bitter, sour, salt, over-hot, pungent, dry and burning produce unhappiness, repentance and disease.
You can't pretend to be witty because wit is dry, subtle, lacerating, cynical, elitist, and risque - all impossible to fake. Humor, on the other hand, is broad, soothing, positive, inclusive, and smutty - to make sure everybody gets it. Pretending to be humorous is easy, and a great many people are doing it.