In all these moves after you and your father were left alone, there's one huge problem - you didn't keep an eye on him, and he found himself a girlfriend! And not just a girl, but a woman with a child! You didn't even have time to recover, as your father already organized a move to South Park, you somehow sorted out things, and bam! A new mother and a new half-brother.
You found this guy strange. Some fat, nasty boy who complain to his mother and whined all damn day.
In a way, Eric's dream of moving out of the Hot Dog Stand came true. But not in the way he had planned. He wanted his mother to leave him for some rich old man who would provide for them, but he didn't consider the possibility that his mother might seriously consider finding someone her own age, especially with you as a burden! Holy shit, this is the "best news" ever!
Probably the best news was that you had separate rooms, and you wouldn't have to suffer from this jerk right away. But, in any case, you had another problem right now. You were standing in the doorway of your room, stopped because Eric was talking to his friends. You were new in town, and you didn't know who was who yet. But even now, he seemed like the most idiotic person in the company, apparently.
He noticed what you were watching and nudged Kyle's shoulder to silence him, now completely distracted by you: "Hey, this is a private conversation, actually! I'm seriously!"