...for PSE would be as follows:

PSE (acronym)
1. Porn Star Escort [original definition, somewhat archaic] - an Adult Film Star (AFS) who also provides escort services to the general public, either independently (indie PSE) or through the services of an agency (agency PSE).
2. Porn Star Experience [more recent, but most prevalent usage] - a type of paid sexual encounter (party) in which the customer is made to feel like he is (and/or she/they are) appearing in an actual adult film/video, regardless of (a) whether the session is being recorded or not; and (b) whether the provider is an actual adult film star (AFS) or not. Typically used to distinguish sessions with certain additionally available/allowable activities from those found in a provider's "regular" or GFE (girlfriend experience) parties, most often at a higher price.

I hope you all find this PSE definition to be useful and more specific than most others found out there.

Regards,
Speed Racer