Do you have anything to back up your statements , or are you just making broad generalizations about other people making broad generalizations while failing to recognize the irony in that ? <| sep |> They just wanted some Thanksgiving ice skating . <| sep |> Even more strange , most recreational drugs fall below detectable levels given even a short advance notice , so make no mistake , drug testing means cannabis . A person who uses addict levels of heroin , cocaine , and methamphetamine , given a couple of days notice , can pass any drug test . Casual marijuana user is lucky if he stops for three weeks and still passes . This has been a major consideration for me , a bona fide licensed medical marijuana user . I can ' t accept a job anywhere with a zero tolerance drug policy .