I don't know if you're just exaggerating or if you really do hate your brother. If the latter is the case, call the police if you see him doing drugs again, or even if you find them in his room or something. Don't consult your parents, just call the cops and bust him. This might be a good idea even if you don't hate him. It'll teach him not to do that crap.
Long Live Fred the Spanyard |