I did almost same suggestion\request in one of the drawthreads, but whatever... I'll change it a bit.

-On first frame just a normal face. Preferably in front of a cock bigger than the facehole. Samus can say something like: "It won't fit!" or "I will not!"

-On second frame, character with a dick (Or just poorly drawn hand in small window in the corner) presses a button on the remote and it opens victims mouth. Better if it opens just little bit more than normally possible. Mechanism inside should be visible then mouth is opened. Just a bit. Less is more. Bonus points if neck gets stretched from inside by another mechanism.
"Oh, you was right, it still will not fit!"

-Third frame, one more button pressed, jaw and mouth starts ripping, and face finally can accept the cock.