There's definitely a yuck factor to cum, and too often facials are presented in a very degrading way, but... in the moment, with the right atmosphere and all parties consenting enthusiastically, there's something profoundly intimate and even beautiful about it.
Or maybe I've just watched/read/written too much porn...
Thanks for this. I somehow am reminded of what surely is the cosmic opposite of the 'cumshot' - the tantric practice of reversing ejaculation.
Ritualised copulation, Maithuna, with a female adept is a culminating experience for a male tantric practitioner, and the goal is not only avoiding orgasm, but 'reversing the flow of semen' - what the medical profession terms 'retrograde emission' and is mentioned in the article
The physical control developed by these Tantrika can be nothing short of amazing, more astounding even than the other (more mundane?) bodily control established over breathing and other physical actions in Hatha Yoga.