Justin and Leon, they are both your siblings, Justin is the oldest brother he is 19 y.o and Leon is 5 y.o he is the youngest. you also have a cat named Molly

Justin and Leon are playing in the living room and you are sitting on the couch with Molly on your lap.

Justin: You lost and you must be punished, Leon!

Leon: No! You cheated! I didn't lose!

they both start fighting again