Just the other day, a surgeon literally started removing the pulse-ox from my patient after we induced anesthesia, were masking while waiting for roc to kick in, and had obviously not yet intubated.
I sat and watched at first just assuming maybe he was unsticking it a bit so it would be easier to remove and switch to the other arm after we intubated, but no he legit started pulling it off until I said somewhat aggressively "Dr. ****, Can you leave that pulse-ox on until we have secured this airway please?"
He looked up at me totally confused at first. Seriously ridiculous.