When Alexander gets a hug at the end, marking the first time anyone has shown him any sort of affection.
"Don't go, I'll eat you up, I love you so."
At the end, when Max comes back, at first, it looks like nobody's home, but then Max's mom comes out of the kitchen and hugs him. And later, we see she's made up a bowl of soup for Max, which he eats, while she watches him.
Max's mom is nearly in tears talking about a job issue over the phone, and Max, wanting to cheer her up, walks over and starts doing the robot. She tries not to laugh.