Testing the mouth portal

The three portals opened like a card, with a naked picture of her sister on one side. On the opposite side, there is a picture of her mouth, pussy, and anus, depending on the card, with all three holes opened in the picture and a pink circle superimposed over it.

Frank chose to test first the mouth portal. He pressed a small button on the back of the card and suddenly the portal was opened, replacing the pink circle. He could see the interior of her sister's mouth, with the picture of her lips around it, making it look like her mouth.

He was eager to use it now, but he was hesitant to insert his cock without first testing it. Despite knowing that portals have numerous security measures to prevent accidents, he still wanted to be sure first.

He decided to spit in the portal.

While sitting at her desk at work, Clara noticed something strange splashing onto her tongue. A second one hit the back of her throat, which caused her to cough.

Frank was in awe! He spat on her tongue and then her throat, trespassing the card. Now that he is sure it works, he introduced a pair of his fingers and started playing with her tongue. He grabbed her tongue and made her stick it out of the card.

He has already read online how this mouth portal works. The portal opens behind the woman's teeth, wich means the woman can't stop the portal by closing her mouth, and it is also equipped with many safety features. That is why is so expensive!

The girl's tongue or anything in her mouth at the moment of warping the portal can pass through without touching it, preventing cutting accidents. The portal only becomes solid for the tongue once it is fully behind it. Also, the portal is capable of exerting **** upon any object in between to move it before the portal is closed. And in case the object remains stuck, the portal won't allow to be closed.

Another security measurement prevents the portal to open if the woman has food or other large object in her mouth, to prevent any possible ****. Feeding and drinking is not possible when the portal is open, but to prevent starvation the portal only remains solid when there is any object in between, which will be expelled by the portal if detects the woman is in danger due to lack of food or water.

Clara became aware of the invasion in her mouth. Her tongue was being touched something grabbing it and pinching it, forcing her to move it. It seems to be two fingers and soon she noticed that her tongue is out. How is it possible? There is nobody in front of her! She covered her mouth with her hands but discovered with horror a contradictory sensation: her tongue was out but her teeths and mouth were shut. It's the portal she purchased!

The fingers ceased to play with her tongue, but they commenced something even worse. They pushed their way into her mouth, attempting to reach the back of her throat! Clara coughed because of her gag reflexes, but she spat into the other side of the portal instead of her hands.

The fingers stopped, much to Clara's relief, but after a few seconds something new intruded in her mouth. Something softer started playing and twirling with her tongue. She is being kissed with her mouth closed! No matter how much she tries, she is unable to stop this strange kiss.

"Who is using my portal? Clara thought. Is it possible that her fiancé has discovered it? She was confident that she entered her own address, not his. Despite this, she still texted him to confirm.

"Babe, I know you will love the gift I sent you, but I am currently working". The intrusion persisted, so she dashed to the bathroom. When she opened the door, she received his response "Have you bought me something? Whatever it may be, it hasn't arrived yet".

Clara is shocked! Some stranger is using her mouth portal!

Meamwhile, Frank was loving the portal. After playing with the tongue he started to finger her sister's throat. The he finally kissed her. Even though he couldn't taste her lips, he enjoyed giving her such a deep kiss. As his confidence grows in the portal's safety, he lowered his zipper.