Zecora kissed her. Twilight’s eyes widened as those soft but strong lips pressed against her own, forcing her mouth open. Zecora’s breath was a spicy flavor that Twilight couldn’t name, but all the tastier for it. And then her breath was a rushing wind, inflating Twilight even further. Twilight felt the pressure building inside her, the stinging sensation as her skin stretched. She tried to pull away, but Zecora held her tight with her forelegs, breathing more and more air into her. Twilight beat her hooves against Zecora’s chest, once, twice. Then—fwoomp! fwoomp!—her forelegs filled with air and stuck straight out, then her hind legs did the same. She was helpless now, puffed up to twice her old height and still growing larger.
Zecora had downright impossible lung capacity, and she filled Twilight relentlessly. The unicorn frantically tried to move her legs, but those puffed-out limbs could only waggle a few inches—and even that freedom decreased as they sank into her ballooning sides. Larger and larger she grew—to three, then four times her old height—until she dwarfed the zebra inflating her…
Yet another scene from R-Panic’s story Evil Expandtress, because there hasn’t been any art of the second chapter yet.