Eminem curses a lot, including toward players (guys who "play" women by talking "game" to get them into bed) - even more than football coach Marty Schottenheimer does while yelling at his players in the locker room.
You can assume already without being told that the people I am referring to make it their custom to purchase alcohol by the bottle when they go to the bar or club--an expensive way to buy drinks and a symbol of wealth and status.
In the context of the song this means: "I ignore those wishing to befriend me [now that I'm famous]." Teste refers to testicle. To be left hanging is to desire contact but have it denied. Taking a left is avoidance.