Strap-on anal bi training

Today I use two of my slaves and educate them to become will-less anal servants! I fuck both slaves and, after each fucking, the other slave must suck the strap-on clean again! What a humiliation and degradation. Just disgusting! But it's not me who has to take the strapon in my mouth, so I don't care how disgusting it is! It slips nice and easily into the other slave's asshole. Fucked hard and mercilessly and in the mouth too! Finally, I still have my monster dildo, with which I take one of them hard again!