When I first started smoking I used to think I was hearing Police sirens lol. Thats also cause at that point in time I was doing alot of speed and stuff and when I quit doing that I sort of quit hearing things, but everyonce in awhile Ill think I hear my mom calling me and she dont care if i smoke or nothing but I go down the stairs all glass eyed and Im like, "Ya whaddaya need?" And shes like "what the hell are you talking about". Its all good though, it happens less and less nowadays.