His little sister without panties is a lot of temptation for him
He wants to watch television like any normal kid his age would. Also, look at your cell phone at that very moment. Technically he is not seeing one thing or the other, he is just letting time pass without doing anything, because doing nothing is what a man likes to do. However, he will have to start doing something, because his little sister without panties is a lot of temptation for him. Then he puts his hands between her buttocks and she gets horny. Which makes her give him a cock suck and then he will have to fuck her pussy. As is normal.