I know this is a popular thing to say/think but people really need to understand what this means.
The idea that players will be out a party (or bar or dorm room) and some booze is being passed around or a joint is being passed around and it gets to the player and he shakes his head and goes "Nope, none for me...I have to think about the team first" is really not realistic.
The "culture" is about winning and lifting and being a badass. It is about being on time and paying attention...it is about playing through pain...it is about showing up to extra team stuff, lifting, running plays, going out to eat.
Don't get me wrong, every coach in America at all levels wants their players to be in bed by 9pm each night, never miss class, call everyone "Sir and Ma'am" and never drink or smoke or speed or roll through a stop sign...but they are also realistic.