He gave Louie an odd look, taking a half-step back. That expression on the young duck's face was.... off-putting, and he only really remembered seeing it one other time, when Red invented the "Red and Gobo Gobo and Red Slide." Following Louie's line of sight to just below his neck, he patted himself-

Then realized what it was and quickly stuffed it back under his shirt.

"Nothing. It's nothing."