Suck your own cum

I work on the slave normally for the time being, without him having the slightest idea what I still have in mind with him. The nipples are nicely played with and he has to suck and blow a thick rubber cock very deeply. At some point he has to show that on a real cock that he has it good. At some point he gets a rubber on his cock which I then jerk off vigorously until he cums. All the sperm was collected and the slave still does not suspect that he now has to suck the whole load completely out of the rubber. In addition, there is a lot of snot in my face, what a delicious cocktail for the slave