(In no particular order)

#1. Do not insult him when a wrench is in grabbing range.

#2. Do not break his things. (no touchy no touchy)

#3. If you get injured by something stupid you did, do not go ask him to repair you, you will likely get mauled.

#4. If you do not wish to die, do not steal his wrenches.

#5. Do not name is wrenches.

#6. And do not play with his wrenches.

#7. Do not say that knockout is a better doctor then him, you will die. Then he will somehow find a way to bring you back to life, just to prove you wrong.

#8.Do not be absent, or even late when you have a checkup scheduled.

#9. Don't run away, it will make it worse.

#10. and for Primus sake, if you value your life at all and someone does break one of these rules, don't ever interfere with the hunt.