It face-fucks you into unconsciousness

Muffled groans of protest manage to make it past your lips as the creature uses your mouth like a toy. The disgusting alien length sliding in and out of your throat without care for you. The edges of your vision go blurry at you run out of air, fast. You try your best to stay awake, but you begin to feel lightheaded and eyes struggle to stay open. Finally you black out, the creature still thrusting in and out of your mouth.

You awaken not long after as something floods your throat more than the creature's pre was. Warm and sticky the unknown substance fills your throat and begins to fill your mouth too as the creature pulls out. The creature had cum down your throat as you passed out. You cough multiple times, hacking up the foul, sour liquid, trying to clear your throat and get air. The creature merely stands aside and watches with demented glee as you struggle.