i have to agree, your mom is being very cool and should be respected because of it. i also agree that she was probably talking about your porn or cum rags. on the other hand some parents arent as stupid as you think they are. i would approach the subject with her just to get your answer. if its a deffinate nono then keep it out of the house, but you also might strike up a whole new kind of relationship with your parents. being hard workers and "average" kind of people, i would say there is a good chance they either do or did smoke and will be cool with it. they might respect you more for being honest with them. at least i would.