If you’ve got three or more people shooting their load on your face at around the same time, this is known as ‘bukkake,’ a genre of porn in its own right.
There’s nothing to worry about from a health point of view, if you’re spunking on someone’s ass cheeks, chest, beard, face, hand or anywhere else that doesn’t have an ‘entry point.’ But ask them first. Emphasis on, ‘on’ here, rather than ‘in’ (we’ll talk about that further on).