Int. Sheldon and Amy's apartment.

Amy puts Stephen in his high chair and sits down next to him. Sheldon joins them, bringing a bowl of spaghetti.

Sheldon: Here, eat some spaghetti. They are good.

Stephen refuses to eat.

Amy: You are doing it wrong. You have to show him how eating goes.

Sheldon: How can he not know that? You put it in your mouth, you chew, you swallow. It is always the same process. See. Constancy.

Sheldon shows Stephen. Then he accidentally burbs, Stephen giggles.

Amy: Sheldon. Stop it. He has to eat. He is not getting enough food. Why does he not want to eat?

Sheldon: He needs fun. Entertainment. I should take him to the train station.

Amy: How is that suppose to help him learn eating?

Sheldon: There are many people eating there. He can observe them, and then we will watch the trains. Doesn't that sound fun?

He looks at Stephen, they both smile. Amy cuts the Spaghetti and tries to give Stephen a spoon.

Amy: Look how I do it.

She eats a spoon of spaghetti.

Amy: You are missing out on something great. Shall I eat all your food?

Stephen grabs into the plate with his hand, splashes some sauce, laughs.

Amy: No, we don't play with food. You have to eat it.

She takes the plate away from Stephen into the kitchen.

Amy: I give up. I am too exhausted for this now.

Sheldon: You know so much about biology, there is no one more perfect for knowing how this brain works than you.

Amy: And I want you to catch up on me.

She walks into the bedroom and closes the door.

Sheldon: Women, huh? I get why you don't like eating. She forgot the sausages. Let's clean this mess, you probably prefer to splash and you could need a bath.

Sheldon puts the bowl as well as his and Amy's plates from the table, takes them to the kitchen, and then carries Stephen into the bathroom.

Sheldon: I will clean you now. You can sit in the bathtub and splash with the water. Here is Aquaman and Squirtle. It's a turtle Pokémon. Oh, where do I have my Ninja Turtles?

Sheldon puts Stephen into the bathtub, starts the water and looking for his Ninja Turtles when Stephen falls back in the bathtub, lies in the water. Sheldon grabs him, sits him up again.

Sheldon: Do not drown before I taught you swimming. Even though you do not have to learn that. Lying on the beach, risking skin cancer. Most people are so stupid, but I learned they don't know it. It's just between us, the smart ones. Swimming is no fun either. It's being exposed to germs in water, without barely wearing anything. I do not get what people like about that.

Stephen takes Aquaman and throws him to the other side of the bathtub. Sheldon gets wet. Stephen giggles.

Sheldon: Oh, you think this is fun? I could make you wet as well.

He splashes his son, Stephen starts to cry.

Amy yells from the bedroom: Sheldon, what did you do?

Sheldon tries to comfort him: Don't cry, little man. Do I cry? Why are you even crying?

Amy: Sheldon, do I have to get up? I thought you are smart enough to handle a child.

Sheldon: I am. I ...

Sheldon goes into the bathtub and hugs Stephen, rocks him back and forth. He reaches for Aquaman and Squirtle.

Sheldon: Aquaman chose Squirtle as his Pokémon as he entered the arena. They both use their water power and then, making waves.

He moves the two figures in the water, making waves. Stephen stops crying, listening to the noise, watching what his father is doing.

Sheldon: He controls the water, all water. Hey, is there water in your eyes?

He turns Aquaman towards Stephen, like the figure was looking at him.

Sheldon: I demand the water to stop.

Stephen grabs the figure, looks at Sheldon and smiles.

Amy rushes in. She stops in the door frame, and makes a noise: Hoo.

She blushes when she sees Sheldon and Stephen in the bathtub.

Sheldon, confused: What is wrong?

Amy: You two are in the bathtub... I didn't expect... I go back to bed. I have... This is... Oh, I am...

Sheldon to Stephen: Women. I stopped trying to understand their behavior. A couple years ago, I thought she would be sick, but now I know speaking in ellipses are only temporary.

Stephen giggles, playing with Aquaman.