One mistress I know has clips for sale on the topic or encouraging gooning. what is gooning? Her version of gooning is with poppers or a brown bottle, whatever those are

Different people have different ideas of what gooning means, but for the most part it's the act of being in an intense, almost hypnotized state of mind after spending hours edging / chronically masturbating.

For instance, you "gooning" over her would be you not being able to think about anything else but your dick while masturbating to her for an hour without cumming because you're so obsessed with how your dick feels.

Many clip sites ban the words "hypnotize" and "poopers" so sometimes "gooning" and "goon juice" gets used as a replacement.

LOL I know I'm showing My age for this-- I had to ask someone under 30 what it was recently. "Its like the term 'wanking' but with more of a 'loser in their parents basement' vibe."

I read this as “what is spooning” and thought hmm, that’s an odd question for a femdom board.

I was today years old when I learned gooning was a thing. Though after reading the description, I believe I have indeed gooned before. Lol

The mistress has clips for sale in which gooning is used to refer to inhaling the scent of what I now assume to be amyl nitrate or what some might call poppers. I do not even know if amyl nitrate and poppers are the same thing! What risk or harm is there of inhaling, if any? Do people do this much in California?

Yes Amyl Nitrate is usually what we call poppers, you take a whiff and it gets your ass loose (supposedly) and a head rush, which is why they're popular in gay culture. I'm not a fan. I personally don't allow poppers in My sessions because the smell gives Me a massive headache just being in the same room. Plus its annoying to have someone tied up begging for another hit of poppers every 5 minutes. I'm not an expert on the side effects but I would suspect they are not great! Stick with anal-eaze if you want some help loosening up. As for the headrush, there's plenty of other drugs that are less damaging.

As DommeLynx said, They're using the word 'gooning' because 'poppers' is probably banned, Its a combination of forced intox/hypno/joi scene it sounds like

More severe risks can include Seizures, Red blood cell damage, Poor immune system functioning, Damage to the heart, liver, kidneys, and lungs, Damage to eyesight.