1. How to practice laughing, pick objective, to not laugh, pick any emotion, build and hold in chest, then let the flood gates go with the emotion and laugh. The same exercise for crying. Once you are laughing, then cry. Objective for crying exercise is; to not cry.
  2. Hit at the core of what people have been laughing at. Look for absolutes. What people are familiar with.
  3. Laughing: don't strain.
  4. Know when to make the audience stop laughing and be serious.
  5. Power of the actor: how to make the audience stop laughing?

"In the end, it can't look like acting."