You might have been dreaming. I had a memory of the doctor saying "clamp down" and I bit down on the endoscope and he said "not you." I asked him if that happened and he said nothing like that happened at all and it was just a false memory/pseudo dream. Or he was lying to me.

I remember there was a lawsuit when a guy left his phone recording when they wheeled him in for a conscious sedation procedure and the doctors and nurses were making fun of him audibly how fat he was. Seems like they're confident enough in people not remembering for them to do that - or being able to dismiss it.