Panel 1: (Desmond is entering the doorway with a suitcase. He is happily signing home to Cedric and Helen. Cedric is looking up from reading a book, smiling. Helen is smiling and waving hi)
Desmond: “I’M HOME!”

Panel 2: (Cedric is standing up, gesturing as if he’s flipping a switch on his chest with a CLICK! sound)

Panel 3: (Desmond looks confused, signing what-that to Cedric, who is smiling and signing)
Desmond: “WHAT WAS THAT?”
Cedric: “I’M SWITCHING TO SIGN MODE.”