The boys watched as the color of the briefs started to change from blue to purple. While they changed color, the briefs started to change, the sides became thinner, and the pouch changed shape slightly. The material became changed from a cotton to a finer material, looking a bit like silk, but it seemed shinier. Keith felt a change on his back-side as the breifs shifted, the back of the briefs thinning, exposing his ass cheeks to the material of the shorts he's wearing. Keith gave a small jump as the back of the briefs snap into the crack of his ass, the briefs having completed their change into a purple thong.
"Woah, they changed, that's kinda freaky" said Jacob, as he reached out and felt the material of the thong.
"Yea, it must change as the curse progresses, but its hard to tell what it might be" explained Caleb.
Jason sat upright, covering his hard cock. "Please tell me there's something you can do for me. That you can undo this somehow" Jason pleaded with Caleb.
"There isn't much I can do now, and what little I could risks making it permanent. The only person who could help would be the one who created the curse to begin with."
"Well then we just go find them and make them undo it."
"Its not that simple. Every spell has a cost on the person who cast it. A curse of this magnitude would leave long-term consequences for the caster. They may not even be in a situation where they can still help us."
Keith stood up, pulling his shorts all the way back up. He looked over at Jason, embarrassed at what he had just done. "Its different now. I don't feel a hunger to suck cock now, though it does still sound appetizing."
"Well what do you feel like doing?" asked Jacob almost afraid of what the answer might be. Keith seened to ponder the question a moment before giving a shrug. Keith then started to feel a tingle run down his spine and focus on the bulge in his thong.
About that time Steve came running around the corner, covering his eye with one hand. "What happened Steve?" asked Jacob.
"You guys gotta get out of here, Adam is on his way here now. James punched me, when I tried to ... you know ... suck him off. I couldn't help it! His cock just looked so delicious! Now go! Hide somewhere!" The guys took off running eventually ending up in one of the science labs. They were all sure they were safe when Keith's stomach started to growl.