Goddess Gynarchy and Goddess Serena - 1st time Glory Hole for Bi Slaves

My collared slave was tasked with creating a glory hole that I can lock him in so he can be used as a working slut for any and all dicks I decide to rent him out to. Today he proudly reveals his creation, but is surprised when after he is locked inside with his own boy clit locked into a shock collar, he is told that he will be testing it out for the first time with a real cock! A stranger emerges as a surprise and uses my slut's mouth to suck his cock and rim his ass until he is satisfied. The gloryhole slut is then taken out of his cage so the stranger can drain him of his cum and pass it back into his mouth in a snowball. Slut is ordered onto his back where he receives a final load all over his face and into his whore mouth.