Slime courtesans are usually hired by clients with very specific tastes or an interest in certain services.
They are generally very patient and great listeners. Depending on their diet, can smell like scented oils, providing their clients with a pleasant relaxing fragrance as they speak their mind.
Most are skilled masseuses. A full body slime bath by certified slimes can make an individual feel as if they've been reborn, skin as smooth as a baby's.
Or you can just hire them for sex. Being bouncier than real boobs is a plus.

Slime sex workers will always remind clients not to try any of the above with wild slimes.

-Kel, regular client