No idea level of drain bamage, but
On my 1st week of the job (8 years ago) I was talking to a very attractive blonde corp project manager at my 1st after work bar gathering. I was not touching anything in those days, so sipping coke while they all got trashed. I explain that I had over indulged in my youth, so I was staying away from it for now.
I assume she was in ass kiss mode, since she said it was probably a good thing I did so many drugs in my youth, it knocked off enough IQ points that I could deal with mere mortals at that point.
On the other hand, I felt I had merely hit the age that my testosterone was dropping and my verbal skills were increasing, along with a self confidence level achieved through many years of accomplishments, which allowed me to speak to her without being afraid. She was gorgeous. And fucking her boss' husband who also worked at the company. Damn, that was a blowup when it all came out.