"Bastard."
She wanted to hit him again, but she could not do it anymore.
"You broke the rule, now you can't hit me for the rest of the day."
They had rules in this house, and breaking rules had punishments.
"You cheater!"
-Splash!
"You made me do it!"
-Splash! Splash!
"Don't splash the water like a little kid."
"Let me go and I won't!"
They weren't supposed to throw punches in the bathroom, but she did, and as a punishment for breaking the rule, he gets to hold her for the entire time they were in the bathtub.
She also can't hit him for the rest of the day in the house or outside so, he at least dealt with the physical things.
He always found it difficult to defeat her in a direct fight anyway so he did not want to waste time when they could do so many more fun things.
"Just stay still dude."
He rested his head against her back, and closed his eyes.