You have dreams about cardiac rhythms and EKG strips.
You forget the number of the truck you're driving while talking on the radio. Repeatedly.
You spend an entire shift convincing an elderly patient to go to the hospital.
You fall asleep in the back of the truck while your partner is in the ER writing their report, and they spend 15 minutes looking for you.
You start believing that the weather knows when you pick up overtime shifts, because that's the only time it snows.
2/3 of your Christmas presents were EMS related.
You clean your ambulance every shift change. You haven't cleaned your own car since you bought it.
You 'borrowed' a shirt from the spares box so you could put off doing laundry for another two days.
If someone recorded clips of your partners' snoring, you could name each one of them and what stage of the sleep cycle they were in.