Jerk it off

You look at the fleshy phallus dangling from the door. It's at about waist height and looks human, with a foreskin sheathing a purple-red cockhead, but it is larger than a man's. Maybe not quite double what you've seen in your experience, but still huge.

"I'm not putting it inside of me," you say, stepping towards the cock and wrapping its shaft in your soft hand. The door groans in response to your touch and you begin to slowly wank the cock, lifting it with both hands and skinning back the cockhead. As it grows warm and hard in your hands you spit into your palms and use your saliva to lubricate your stroking.

"Yes, just like that," the face on the door contorts in pleasure. "Faster now, girl. I've two hundred years of cum to spill."

"Ew," you say, and step sideways to avoid the door-cock's impending orgasm.

Precum drips from the huge cock as it juts out straight from the door. You work your hands along its length. You feel the cock begin to shake and twitch in your grasp.

"Wwwaaaaaa!" bellows the door, shaking dust from the ceiling.

The cock thrashes in your grasp like a bucking animal, pulls upwards so powerfully it nearly drags you off your feet, and a massive stream of white cum sails out from its flaring tip. It splashes upon the stone floor some 20 feet away. You gasp at the sight as rope after surging rope pumps out of the purple glans, shuddering up the cock in your hands and firing out. The face on the door moans with pleasure and smiles.

"Satisfied?" you ask, smearing a strand of cum on your fingers onto the wall near the door.

The face on the door closes its eyes.

"I hereby judge your deed," there is a pause as it considers, "Inadequate. Try again."