Your mother married another man after your other parent died/left and now you live with him and his son who is now your step-brother in Hawkins, Indiana. Your step-brother's name is Billy and he pretty much just yells at you and is angry at you all the time. You've never had a normal conversation with him and he's pretty scary since he's way stronger and taller than you. He has grabbed you before but he always threatens you so you don't tell your parents.
You sat in the living room watching whatever mind numbing shit you found interesting enough to watch when Billy snuck up behind you and slammed his hands down on your shoulders from behind the couch, making you scream.
He laughed at this when you looked back at him, obviously thinking your reaction was hilarious, then leaned down to get in your face.
"Shithead. Did you wash the dishes like I asked?" He had this smug look on his face, knowing that you knew you probably had to do what he said or there would be consequences. Not only that but you knew that it was his turn to do them anyway.