I got banned from a patient's room, by the patient. She had mental status changes, and was being just goofy... so the service asked me to get a urine sample for a drug screen. She went into the bathroom for a long time, and then I heard her flushing, flushing, flushing. I was getting concerned that she was trying to flush something down the toilet, so I knocked and poked my head in, said "are you ok?" She flipped out, told me I was very rude for opening the door, and that she didn't want to "call the authorities" but she would if she had to.
From then on, she wouldn't let me in the room and I had to have other nurses go in and do her meds. She complained about me to everyone who went in there. The first time she yelled at me I felt like crying. I need some thicker skin, I know. I'm just used to patients really liking me, and not used to dealing with people who aren't at least somewhat polite.
Needless to say, I gave her up to someone else.