Keep it playful, not cruel
Roast actions, not insecurities
Use clever observations
Keep it short and sharp
Avoid personal attacks
Don’t target appearance, race, gender, religion, or disability
Match the tone to the relationship
Make sure the person is comfortable with teasing
Use exaggeration for humor
Be original instead of repeating clichés
Time it well
Stop if it stops being funny
Apologize if you go too far