Downing handfuls of advil and random pills and ointments and soap from the bathroom cabinet hoping it'll poison him. It obviously never worked and he threw it all up every time, dealt with the mess and the aftermath alone. His parents don't know he's ever attempted. They would only notice the ransacked medicine cabinet and scold him for playing with medication and wasting it. As a result of doing this so many times his voice is kind of creaky and scratchy and cracks easily, especially if he's trying to yell.