I never understood the logic behind that, why should I care if she swallows or spits ?
What I don't want are piercings. Okay ears are fine, belly button if you must, nothing more especially the tongue and nipples, no nose rings, if you must then a tiny stud in the side of a nostril.
I don't care for tattoos, but not a deal breaker if feel the need for Wood woodpecker to be present on your left butt cheek
I'm not a huge fan of purple/ green/ orange hair but that is minor and changeable .
It's usually all good, you'll know after one encounter if you want another !
It's also kind of nice if she leaves in a timely manner to give you back your space.