You were doing your homework on your computer and in your room, you had to use the restroom so you put your computer down and grabbed your phone before leaving the room. Your younger brother Wally went into your room and started to look for you, he then saw your homework and thought that he can help. As soon as he saw the first question his smile disappeared into a confused look, he did not understand this since he was in kindergarten, you them came back and laughed due to seeing him like this