On the Loot screen, there is a button dedicated to tickling the llama piñatas.
When you do this, they will respond to it with different dialogue, with different types of llamas having their own lines.
Is this literally the only use for this feature, or is there a chance for something useful to come of doing this? For instance, does tickling a llama before smashing it have any effect on that piñata upgrading to silver or gold?