When the bell rang you were still thinking about what you would do next, the bell bringing you out of your thoughts as the students filed out of the room and Miss Anderson started packing up.
"Another day, another class... Let's just go home tonight." She said to you, you blinked, realizing that now, despite being a part of her, she acknowledged your existence as a part of her.
"Seems good." You said, helping her pack stuff into her bag from your position behind her, sorta. When she was done she started walking, bringing you along with her to her car.
When she sat in it you were unfortunately squished between the seat and her, as she drove towards her home. It wasn't that uncomfortable to be honest, but you were grateful when she parked and got out of the car, walking towards her door.
Taking stock of your current situation, you remembered you currently didn't have legs... kinda. From your thighs up, including your crotch, you were separate from miss Anderson, but below that you were attached to her, and your dick was still lodged up her ass.
"As always, a tiring day." She complained before laying on the couch, bringing you with her as she laid down in the just right position so that you could have some room to move, at least slightly.
"I think I know something that would make it better." You whispered in her ear, realizing how the make your experience as part of your teacher better for the both of you.
She hums but doesn't object as you pull back as much as you could, seeing the shaft of your dick poking out of her ass as far as it could. Taking a moment to breath you then ram yourself as hard as you could up her ass.
Pleasure explodes through both you and Miss Anderson, who moans as she rolls off the couch and onto the floor, leaving you on top of her as you will something to change. Slowly, inside her ass, your dick grows, and grows, until the head splits open and the rest of your dick merges with her intestines, your thighs slammed into hers before merging with them, and your ass growing as the mass from hers adds to it.
Your tongue lolls out of your mouth as you lay on top of Miss Anderson, arms limp as you think about how you've just advanced your merging with her. Now from the ass down you were a part of her, and it was incredible. You could feel as both her intestines and yours were slithering inside the very large cavity that was your new merged form, and while your stomachs were separate for the moment, your intestines merged together as any male exclusive organs were purged from your combined body, given you'd sacrificed your dick in merging further with Miss anderson. But there was a new, and very large cavity within your range of pleasure... Miss Anderson's uterus, and her, now your shared vagina. It was massive, as were your intestines. Attached at two different starting points in yours and her stomach, and coming together to your shared ass and urinal tract.
"See..." You panted on top of her as she gave a moan of pleasure, not bothering to get up, just accepting that you had been right, this was much better for both of them. Slowly both you and her fell to sleep, tired from what had just occurred.