You embrace your new role.

Simon pulls out of Heather's pussy in order to finish off the scene with one of her superb blowjobs. The sight of that magnificent Python sliding into her loving mouth and down her throat makes your junior Johnson spirt again, before you spot the oozing cream pie still in Heather's stretched hole. Unable to resist, you dive in between her legs and start sucking hungrily at that mixture of stud and slut, driving Heather to two orgasms before she can get Simon to cum one last time.

The first scene of Cuckold Sissies Volume One is complete, so Simon goes home, leaving James to finish up...
Without another word, James simply lies down on the bed and pulls off his pants, revealing his cock, just as big as Simon's. Your wife, of course, lies down besides him and wave you over to the other side of his spread legs. The two of you will suck James off together. Under this married couple's tender ministrations, James finds the warm wet pleasure too much, and ejaculates a load of tasty cum into both your mouths. With lustful kisses, Heather and you swap spit and cum for a few moments before swallowing, and returning to Jame's cock for a second round of oral sex.

James casually invites over some of his friends for a good time. Each of them are just as big and black as him, Heather helpfully instructs you on deep-throating them. You're a natural, and even prove to be a match rivalling your blowjob queen wife. By mid-day, the well-endowed black men have lined up sitting so you and Heather can get on your knees and compete in a suck-off marathon. Your tiny dick cums multiple times as you and your busty slut wife fill your mouths with hunky dark meat side-by-side, both of you now bisexual cocksuckers.

Your wife measures your penis with a ruler - 1.25 inches long! How long will it be before you get your first assfuck, you wonder?
By the end of the day, Heather receives a text from Simon, informing you both of how Project Milk Dud has entered its first phase and Connor is making preparations.