"The giant centaur is getting aroused from the milk in her udders."
The udders which were doing a good job of moving forward when kicked were visibly harder to kick forward now. They sloshed around a bit and weren't really going the right way. Tina's face was starting to blush.
Erin decided Trish was now feeling left out of the fun, not having any changes aside from her transformation into a centaur. Targeting Trish, Erin generated a sentence.
"The black-coated centaur follows in her giant friend's hoofsteps."
Despite being about Trish, this sentence was really more about Tina, but that was just fine by Erin, who changed "hoofsteps" to "puddles."
Tina's udders were now leaking milk, and a lot of it. Puddles of milk were being left behind and Trish and Cindy were unable to do anything but trot through, splashing milk up and getting their coats dirty. The milk continued around the corner with a larger puddle being left where Tina was when her friends had to adjust the saddle.
Another sentence was generated.
"Trish is disgusted by how dirty her black coat is getting."
This warranted a color change, Erin decided. How about something on the opposite end of the spectrum?
"Trish is disgusted by how dirty her rainbow coat is getting."
When Erin confirmed the change, the once-black centaur was now rainbow colored, with red at the breast shifting continuously through colors ending with purple at the dock. Nothing could compliment it except more rainbows, and the aforementioned dirtyness was starting to show.
The trio were about to round the corner and walk out of sight, so Erin changed the target back to Tina for one final parting gift. The phone generated another sentence.
"Tina's udders are making her close to orgasm."