This is a litmus test

Here's how you'll know you're severely sleep deprived....

If you wake up to cries from your baby at 2:30 in the morning, after having blessedly fallen asleep at 10:30, and in your stumble to the door to help the angel in distress in the next room, you actually run smack dab into the semi-closed door, tossing your limp body back onto the floor in a heap, you'll know you need to go back to bed. Thankfully, the door hit you just to the right of your face this time, not breaking your nose, not bruising anything or causing a black eye. Just bruising your ego a little. Hey, next time, open your eyes as you're trying to get out of your room. It helps, eyesight. It's a great invention.

If you are trying to put your pants on the next morning, and you realize they feel funny because you forgot to put underwear on, you may want to go back to bed for a little bit. You are not the type of girl who doesn't wear underwear.