You can't possibly resist taking over Heather, she's too hot for you to pass up the opportunity. As Heather pulls down her pants and begins to sit on the toilet, Jimmy turns into a gaseous form and slowly but steadily seeps in under the door and towards Tim's twin sister. As Heather begins pissing and playing on her phone, you take your chance and ram full-speed up her awaiting vagina. Heather immediately looks down to see what looks like steam rushing into her private area, as she attempts to grab it and pull it out, she can't help but moan due to the pleasure. You, sensing her pleasure, also pour some of your essence into her plump ass at the same time. Feeling her two holes being constantly filled, she gives up trying to stop your entry and begins rubbing herself and playing with her clit all the while filling the bathroom with her gleeful moans and heavy breathing. As the last of you enters Heather, she reaches a climax and squirts over the toilet while she yells in orgasm.
Too eager to seize his chance, you take over her body immediately after this and continue to massage your borrowed breasts and vagina. After you climax again, you wipe your stolen body and dress Heather's body for the day. Walking out of the bathroom, your former host Rebecca walks by into the bathroom, feeling especially sore for some reason. You also see Tim walking out of his room for the day, and you want to be extra safe that he doesn't discover your new hiding spot. After ducking into Heather's room, you decide to make her think everything she did was of her own accord and sit in the back of her mind, influencing her choices for the day.
Heather's POV
Feeling the afterglow of what you did in the bathroom, you can't help but feel euphoric and excited for the day. Before you go downstairs to grab breakfast, you decide that you need to get dressed. After a while of deliberation, you decide to wear some slutty underwear, searching for a thong in your closet. Not finding any, you decide to steal some from your Mother, after all she surely must have a pair. After finding a pair that was too big, you decided to wear it and go braless for today. After putting on the rest of your clothes, you go downstairs and sit at the table with your family. Your mom looked at you and smiled, despite seeming very tired and half of her breast hanging out of her nightgown. For some reason, this makes your lower half tense up and begin to feel moisture building up in your stolen thong. You must have been making an odd face, as Tim looks over at you and makes a weird face.