OK. now that that is settled, how about an Illithid courtesan?
It's probably not a good sign that I find this appealing.
Anyways... I'll bite. An Illithid courtesan might crave a taste of exceptional minds - serial killers, inventors, philosophers. Or maybe sampling both heads of an ettin at once.
I'm not sure what an Illithid would have to offer to any but the most deviant of tastes.