Something to do on a hot Saturday night

From my attempt to research and recreate the situation, 'Rohypnol', one of the 'date rape' drugs, known colloquially as 'roofies' was the substance snuck into my beer.

How do you know this?

Because I was 'unconscious' for 12 hours.
And still somewhat 'shaky' for 2-3 days afterwards.
The symptoms fit for someone under the influence of Rohypnol.

Do I need to read anything into your question?
Or is it simply asking for why I came to this analysis, theory and 'almost' conclusion based on a careful examination of my experience with feedback from several sources who saw or helped me in the aftermath.
There is also 20-30 minutes of videotape captured by a security surveillance system during a portion of the 'Incident' where I am able to observe my 'behavior'