Make sure the kiddies don't wander in while you're watching Y tu mamá. It really has an awful lot of extremely unabashed teen sex in it, and will infallibly cause you to have to have That Talk a while earlier than you might have planned. Also, no impressionable child should get their idea of sex from teen male shenanigans. It's an unfair handicap for later life.

Other than that, hope you enjoy them ;>.