You pull down a purple giant octopus costume made for two people.
Alex looks at you and shrugs. “I guess neither of us will be arguing over who’s on top this way.” Alex hangs back up his muscle suit.
You start unzipping the purple octopus when you look to the side and see Alex starts to take off his clothes. ‘What are you doing!?’ You ask covering your eyes so you don’t look at Alex’s junk.
“These costumes are magical remember. I don’t want clothes getting in the way of the experience. I suggest you do the same.”
You can’t argue with that and start taking off your pants, thankfully no one was in this part of the store except you and Alex.
Once undressed you slide into the tentacles with your bear legs and feet. The costume was very slimy and cold inside but that made it easier to get on. What didn’t make it easier was the cool slime rubbing against your junk making your slightly aroused. Your face was sticking out of one of the eye holes covered in a bubble of transparent yellow plastic. Alex slips into opening rubbing his back and butt against yours as he got his limbs into the tentacles.
Alex zips up the suit and the two of you wait back to back in the purple octopus costume for some kind of changes. Nothing happened and you were left naked next to your cousin inside an octopus costume that was starting to heat up.
‘I told you nothing would happen.’ You brag to Alex who had been oddly silent throught the experience.
You reach back for the zipper but find it hard to locate from the outside in your tentacle. Frustrated you try taking your hand out of the tentacle to unzip from the inside to no effect, your hand was stuck inside the tentacle, what’s worse you could now move the costume tentacle in a way that should have been impossible for some with bones in their arm. You desperately search the slimy tentacle mass for the zipper so you could exit the costume. But the zipper was gone. You feel a crushing and cracking sensation as your legs and torso are turned to jelly to line up with your arm tentacles. You get a shock from your spine and suddenly feel eight tentacles under your control instead of four.
You feel your skull and that of Alex’s merge together and get a flood of memories of him doing through the same experience you had.
The suit gets hotter and hotter and both the inside and outside get slimier and slimier. You feel your organs altering. You feel three hearts pumping blood to your eight limbs. You feel a beak forming at the center of your tentacles. The plastic suction cups become real. Your shared bones become nothing more than a membrane. You black out for a few minutes, when sight returns you were now looking out both the plastic lenses on either side of the costume, but there was no plastic their now. You were looking out eyes that had once been you and John’s faces. You squirm around on the ground trying to find a direction to go. But even with nine separate brains controlling eight limbs was a challenge in its own right.
Add to that you were now a marine animal on land nearly ten times the size a normal one your species should be and you begin to see the issue of becoming a real giant octopus in the middle of a costume shop. You were making a mess of the room you were in trying to get use to your new anatomy when suddenly...