Spoilers follow, etc etc,.
Theme: Expansion of the business and the physical form. Very evident. Yay!
Story: Enjoyable quick romp, equal parts romance and business, with a hint of living up to expectations. The porny fakeout on the second day was perhaps too obvious that it wasn't porn, by merit of where it fell in the narrative. I wonder if it would have felt more effective if it was on the third day, where they'd gotten even further closer still.
Enjoyed the classic Ghost-esque donut sculpting scene. A classic setup.
You know what you're setting out to do, and you follow that to the natural conclusion, a fun one at that. I didn't test for making things worse, but who wants to. That's not as funny.
His expansion rate is a bit unbelievable, as it the fact he started off that skinny, but I can quickly look past those given they were your means of implementing the theme in part.
Overall enjoyable quick smutty romp though!
Presentation: The arms on the non-expanded sprite feel out of place, which makes sense, as they tie in the most at the largest frame. I think it would have been nicer if they started off smaller. The head also felt maybe a bit too small for the sprite at the end, but that may just be me (who is not an artist).
The music for the smut scene felt a bit out of place (and didn't start immediately), and I was a bit gutted we didn't see the backside, although I was pleased with the cg you put together. I also may have wanted one more view of the foodtruck, facing out the customers, if only to mix it up a little, but that wasn't a major thing.
Creativity: In a way you went outside of the box against the majority of this jam by directly embracing the theme in a more literal sense, while also tying it into a more figurative sense.
Overall thoughts: Enjoyable, sweet, cute art! No major gripes. Well done!