Perhaps use it to show an SPH enthusiast what a REAL cock looks like.
You are a keeper if you can actually get him to try even just a little taste in the end.
Some guys will come to you with a shot glass or other container and hungrily imbibe every last drop.
To make it easier for the wimpy ones, I tell them that their dick belongs to me now, so it is not really like they are eating their own cum – because it is MINE.
Many ways to get creative with this to bring them to their goal of being the cum eating whore they always dreamed they were. What pace they use and how they touch themselves, bringing them in and out of an edge.
Others will ask you where and how much to ejaculate.
Some will show off how they can shoot it into their mouths or distort themselves into impossible positions.
I have heard of some girls who get super measured and perform countdowns until the moment of orgasm. It is exactly as it says – Some guys expect you to get all Mac Guyver on them and present to you implements they have to use on themselves, seeking your guidance on how.
Some guys are not so prepared and hope that you will know what to do and guide them to use items in their environment.
Even as a seasoned Domina/kinkster from waaay back, I had to declare WTF more than a few times to the abbreviations flung about. Even if they are of average proportion, be certain to make sure they realize just how small and insignificant their sorry excuse for a cock actually is.