You do that. The horned creature gestures for you to calm down, and assures you he did not eat Sally. You don't trust him.
It's time to activate your ultimate survival instinct.
You would love to do that. However, this kid may be your only ticket out of this absurd planet, so you'll have to wait for him to fix your ship. Also, he appears to have become a sponge, and you're not exactly sure how to kill those.
You've got to do something to calm this kid down.