In-game testing needed. Details: Document all causes of anger.

Anger is a condition that can befall any piñata. Anger is denoted by a red cloud around the piñata's head. In this state, piñatas are highly likely to start fights. Anger can be neutralized by watering an angry piñata with the watering can.

Causes of anger

A piñata can become angry when it is:

Whispered to by a Sour Bonboon.
Tapped by the trick stick with while it is not performing a trick.
Poked by the shovel with .
Zapped by a thistle.