Alastor was preening all of Lucifer's wings, but Lucifer wouldn't hold still because he was ticklish. He snorts and laughs.

Alastor: "HOLD STILL."

Lucifer: "I'm trying! I'm ticklish-" laughs again. Alastor is annoyed Lucifer calms down a bit his wings fluttering. "I'll be still as a rock now!"

Your Alastor.