That I would do (and have done) - there is no speculation in the affirmative; it is simply stating and restating what I know. I would not say "this "patient"/"customer" is a crock of ****", but "patient is well-known to me from multiple prior visits and professional conversations with colleagues, and was noted to ambulate without difficulty and symmetrically through the emergency department. While interviewing pt, he tried negotiating with me, and threatened me with "reporting you to the state", and "I'm gonna (sic) call my lawyer!". When I enquired as to the name of his lawyer, pt was unable or unwilling to answer with a name. As I was discussing options with the patient, he interrupted me, stating "go **** yourself", and walked out, without difficulty, while I was talking. The registration staff member reported to me that the pt. said "you can all go F yourselves" while he was leaving. When I asked the staff member to elaborate, she was not willing to state the word which began with "F", as she said that it was "obscene". Pt did not sign AMA paperwork. I did speak with his primary physician, to apprise him of the patient's presence and requests. The PMD stated that he was unaware that this pt was seeking care and medications in the ED."
Or something like that - many times.