This is what it sounds like: the practictioner puts someone into a trance and gives them erotic commands: usually things start with orgasm-play, intense or prolonged orgasms; at times I've also done a lot of freeze-play (freezing the girl's body in place) and some identity-play (changing details of the girl's identity, giving her a new one).
It's all up to the imagination, really.
If this sounds intriguing, please do message me. Please do NOT message with a one liner: "oh, that's interesting", "tell me more" or "what??" That's the equivalent of the guy who messages you with "sup" or "ur hot"; you hate it when you get it, right? So don't give it out. Tell me a bit about you and why this is a turn-on (or why you're curious).
If you ARE curious but have no clue, just YouTube the phrase.