Stella had left Stew alone for a bit in their bedroom. Stew seemed to be in his mad scientist mode, but... With that thing he had... As Stella was waiting for Stew to be done she tried to do something to distract herself, but after that experience. Stella's hand went to her crotch. It was currently a hole with the clit, but having a dick and Fucking Stew felt amazing. So much pleasure in one spot, Stew's pussy nice warm and squeezing just right, and then that explosion of passion.
"Honey it's done!" Stew said and Stella bolted excited to maybe fuck Stew again. As she got up she saw their bed had a lot of electronics underneath. "So I took some of the stuff from that remote, and set it up so instead of aiming at people and targeting them that way. Well it targets people who get in, and untargets them when they get out. Currently have it set to infertile and temporary so we don't accidentally lose ourselves or impregnate ourselves. Now then we-" Stella shoved Stew into the Sex Bed and then their bodies started to twitch and change.
Stella pinning Stew to the bed Grew bigger and bulkier while Stew's form shrank smaller and cuter. In one instant a bulky man whose women's clothing were bursting at the seems was glaring at a small and thin girlish women in very baggy clothes. Stella's erection got harder and larger as Stew was nervous but getting the warmth of lust as well. Stella grabbed Stew's shirt and ripped it revealing the small sensitive breasts hiding beneath and started playing with them a bit with his mouth and left hand as he started to pull off Stew's pants. Stew was at the mercy of Stella as she could couldn't even think with her breasts being messed with, and then when surprised when a foot long shlong was "sneakily" shoved into her hole. Stew was stifling her moans a bit, but after Stella shoved his dick into Stew the moans just came out riling Stella up more and more to thrust and thrust building up more lust pressure until the canon was shot. The two both having orgasmed started returning to normal, they remained motionless in bed bathing in the afterglow, and after Stew's dick and Stella's boobs were back the bed struck again. This time Stella was shrinking a bit despite a penis growing from her crotch while Stew grew tall and really curvy which like Stew have more control in this round. The sex happened with mind blanking pleasure. Then they transformed back to normal still not being able to think that well, and then immediately changed into some sort of sexy forms. Rinse and repeat. They probably could escape this loop if they fell out of the bed and no longer be targeted, but the couple currently will be stuck in perpetual sex until something can stop them.