Marginally better

Once again you work your tongue around your Masters cock, accepting this is your only choice and it is in your best interest to try your best. Using your tongue you wrap around his shaft, finding any of the leftover cum from your first blowjob. The gag prevented you from getting a good seal with your lips, so sucking was out of the question, that left all tongue work and head bobbing. Your Master was ensuring your head was always moving, and occasionally pushing you to your previous limits, all at their slow and enjoyable pace.

"Either you're a fast learner..", he moans, "..or you have been practicing this for a long time". Your only response is to moan, in agreement or in protest with their claims, it didn't matter to your new master, they just pushed deeper.

Regardless of what he thought, it was fast learning , there were only two things you could do in your position, think about the aching pain of your caged cock, or think about the cock being thrust in your mouth. His cock you could do something about, altering how you use your tongue and try to take notice of his tells when, to if they seem to enjoy it more or not.

After a while, considerably longer based on the first time, he starts to take full control of the movements of your head, aiming for long full strokes. You initially panic, unsure if this is for your benefit or their enjoyment, but you manage to accept more of him while keeping up the attention. With each stroke you continue improve, learning to time your breaths, to moan as your throat squeezes his length, to twist your tongue around his shaft and head as he slides back.

"Natural cock sucker here!", he gasps as he unexpectedly holds your head hard against him, his cock deeper than before and... you can't breath.. "But... you won't make me cum unless I want to", and he unceremoniously pulls away from you, zipping your now empty mouth closed without a moment to waste.

You gasp for breath in your thick rubber suit, your world reduced to sucking cock, and now that has been taken away from you. You try and listen through the layers of rubber, and you are sure your Master is moving around again, you are not sure but you think they are talking to someone, on the phone perhaps?