If she just wanted her mouth back, she'd use the ball gag--which is why it's so much stranger when she grabs your cup, pressing it to her face like a mask. A great, big dick sprouts from her face, balls hanging down her chin, meat coming to life as it throbs while she glowers at you. You'd wimper, if you could, as she grabs you by the back of your head, your face flush, bringing the tip of your own dick to your already-fucked facial hole.
Without words, you can tell that the 'kiss' you're about to get is your penance; Although she can't stop herself from 'smooching' you, 'making out' with your poor head as it's used to relieve her new facial tool, your eyes rolling back as your hand-cock and... cock-cock throb for the second time in the last five minutes. This is so much better, though, so much less thought is required... you almost don't even feel when she presses a plug to your eye, a little moment of discomfort before it fades into yet another shock of pleasure...
"You did this to me," she answers, in that sing-songy, dominant tone you've heard before... when did she have time to slip the ball gag on? You can't look in ... wait, you can't look at all. And not just because you're being face fucked, you just can't see anymore. "So I'm going to take control for a bit!" You feel a kiss on your stomach--a little nibble to your belly asshole that makes your spent cocks cum, right as she cums in you... and then the world goes silent.
But you're not asleep. You can feel so many holes on your face, flexing. Eyes, mouth, all nothing but big, fat assholes, each flexing as your untouched nose breathes in and out. But you can't hear it as your girlfriend now strokes the new cocks on the side of your head, ears a thing of the past...
She moves down your body, further reducing you. First your other hand... then your right foot... then your left. All your limbs, now throbbing cocks-- and all your openings now needy anus's...