What is sleep?

Just look at this face

I’ll preface this by saying I’m usually not a stupid man but I was at the end of my third 16 hour shift in a row and I was very tired. I’ll make this quick:

I got off work, went out to my car, hit the button for the doors on my remote unlocker - as usual. Nothing happened. I tried it a few more times, battery must be dead. I stand there for 10 minutes, mashing the little button, hoping for enough juice to open the doors. Nada.

I call a locksmith, explain that I’m locked out of my car. He says he’ll be right over. 20 minutes later he arrives. He walks up with his tools, inserts a thing that looks like a blood pressure cuff in the door jamb. He starts making conversation as it inflates, pushing the door open:

“So locked your keys in the car? No problem sir, I’ll have it open in a minute.”

“No, my keys are right here, my key fob is dead.” I replied.

He stops and for about 10 seconds. Doesn’t say a word. He sees my keys in my hands. Takes them from me, inserts them in the lock and opens the door.