The "fluff" I had access to, white blotter commonly traded among Family about 10 to 15 years ago, was to my understanding called so because it was so saturated in lsd that it was many times thicker than a normal blotter. Seriously, lol, this shit looked like little squares of gauze. And it was exquisite, super potent, super clean, super quick.
I still remember my first Fluff... I called myself a psychonaut, liked to drop big doses (still do).
I dropped eight that day. I fucked around. I found out.
But in a good way.