Believe it or not, despite denying everything that's happened in the last 48 hours, Amanda Bynes actually isn't crazy enough ... for a psych hold, that is.

TMZ reports that Bynes hasn't been diagnosed with any mental illness becaus she refuses to undergo any sort of psychiatric testing. Her parents reportedly are concerned she's showing signs of schizophrenia and/or bi-polar disorder.

Even following her now-infamous arrest on Thursday night, Bynes wasn't shown to exhibit any behavior warranting a 5150 hold which would let docs hold her against her will for an evaluation.

Another obstacle to getting her psychiatric help? Bynes was lucid in court.

Though she was mentally -- at least on the surface -- "all there" in front of the judge, Bynes is still in denial about what exactly went down. As usual, she took to Twitter to address it.

Her full missive, below, details alleged sexual harassment from cops and a complete denial of her drug use, despite being snapped numerous times smoking various things.

Don't believe the reports about me being arrested. It's all lies.

I was sexually harassed by one of the cops the night before last which is who then arrested me. He lied and said I threw a bong out the window when I opened the window for fresh air. Hilarious.

He slapped my vagina. Sexual harassment. Big deal.

I then called the cops on him. He handcuffed me, which I resisted, quite unlike any of the reports stated. Then I was sent to a mental hospital. Offensive.

I kept asking for my lawyer but they wouldn't let me. The cops were creepy. The cop sexually harassed me, they found no pot on me or bong outside my window. That's why the judge let me go. Don't believe any reports.

Likely story. On Mars.