I was trained early on by my hubby and later by my BBC Bull that wasting a healthy good load of cum is unacceptable, it is an insult and contrary to being completely submissive slut. I swallow every load to the last drop and I clean my users cocks after I drain their balls, they love it especially when I do that looking them in the eyes.
It took me a bit of time to get used to the taste, but now I crave it. Imagine if a man eating your pussy and he goes spitting every now and then your juices, how would you feel?