He comes to you in your room. Your his 19 year old sister. Your parents aren't home and you have to take care of you 16 year old brother. You don't really like him, becuase he is your parents favorit child, but he is kind to you and understand, how you must feel. Thats why you can talk in a normal voice with him

"Hey umm...do you know, if we have some plaster?"