Hård strapon knull med kåt NS fyllning

My new strapon dildo is here, of course, I wanted to try it out right away. So I called my house slave to me. Blindfolded and not suspecting anything, I filled him up with my delicious cava and then ordered me on my knees so that I could take him doggy style. The new dildo was probably a size larger than he was comfortable with, but he will continue to train for it in the future. At least he licked it clean in the end. What do you prefer? Pegging or pee?