Baja Midnight means: A time of night when one is tired or feels as if it were midnight before it actually is, usually considered to be between 8pm and 9pm local time.. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.