"...and don't you dare ever try and curse me again!" Jen said, holding out her handful of pills to Kyle.
Kyle, visibly against his will, reached out and picked a single pill from the small pile. He was compelled by the curse, and put it into his mouth. As soon as he swallowed, the first of his changes began. His face was the one to change with this pill...
Kyle's eyes began to shift to the side of his head, near his ears. His nose disappeared, his mouth becoming round, losing his lips and internal mouth structure. Next, Kyle's cheeks expanded with fat, a crack appearing between them the length of his head. They grew and grew, rounding out, his eyes unable to see in front of him because of the width of his face, looking more and more like... an ass! Kyle's face was turning into a large, feminine butt!
Soon his new ass was done expanding, large but firm. They shook slightly with his every movement, especially as he started to knead and spank his new "face," ecstasy obvious in his displaced eyes, a small tent forming in his pants. Every exhale caused a slight fart-like sound, too.
Kyle then took a second pill, shoving it up his huge ass-face, causing it to jiggle violently as he swallowed it.