Rick looked lustily as his piggy prize as he stood naked on the railing of Chad's pig enclosure. He smelled gamy to Chad, the bloated sow who had once been the studly quarterback.
"Sooey!" Rick shouted. It was followed by a series of snorts or grunts, each more animalistic than the last. He tore off his shirt as he said "sooey." His bare torso erupted in coarse hairs. With each grunt, he removed more clothing and grew hairier. By the time he was naked standing on the second rail of Chad's enclosure, Rick looked more like an anthropomorphic wild boar than a human being. The stone hanging from his neck glowed intently. He grunted, leapt off the railing and into the enclosure with a final grunt. He was all wild boar, thick coarse grey-brown hairs, arched back, barreled torso, curved mean tusks, and sharp hard hooves. The scent of maleness overwhelmed Chad. He tried to bury herself in the mud hole to no avail.
In the adjacent stall, King Solomon, the dominant alpha hog on the farm shifted his massive body as he smelt the male interloper, and heard one of his sows whimper and squeal, as the interloper mounted her. King Solomon moved surprisingly fast ramming into the partition fence between the enclosures. Wood splintered. The King was in Chad's enclosure too. Rick was too focused on his sex act to notice the much larger domestic hog coming up behind him. The scents of sex were making King Solomon horny.
Chad suddenly felt enormous weight, as the big hog mounted the much smaller wild boar. It was Rick's turn to squeal. The crystal was still glowing intently, but was now flashing hot pink. Rick's tusks seemed to retract inside his mouth, his hairs grew less dense, he grew fatter, he was less masculine, he was less boar like and more like a domestic pig. Rick grew heavier. Chad grew lighter. His forehooves splayed to form fingers. King Solomon had messed up Rick's spell but good.
Chad pulled his sore muddied human body from beneath the big sow mounted by King Solomon. Rick was now a sow. Chad reached the outer fence of the enclosure, and used his weakened arms to pull his body up, and out of the mud. He looked down at his muddy, naked form...