"Scott, my name is Scott," he blurted out without a second's notice. "And you are?"
"Oh, ye' really donnae know anything at all, do ye?" replied the voice back, filled with glee. "Ye just gave yer name t' the fae folk. Names have power, and now that I've yours, I can do anything I want to ye... But, I'm a fae of my word, so let's give you that 'wee smallest' bit of magic why don't we?"
Scott, realizing his mistake far, far too late, tried to run but found he could no longer cross the circle of mushrooms back to the rest of the meadow. "No, wait, please I--" His pleading was cut off by a prismatic shower of sparkles from somewhere above him as he put his arms up to protect his face. They were warm, but not entirely unpleasant, and immediately absorbed into his skin anywhere they landed.
"There, you should be feelin' it any moment now," cheered the fairy from up above him somewhere. "An' don't bother tryin' t' leave. We've got all the time in the world before ye'll be ready t' go."
He didn't like the sound of that, but he had little choice as the force of the fairy circle kept him within its confines. And then, he started to feel just a bit off. He continued to look around for the fairy, trying desperately to at least see his new 'friend', but it was still to no avail. The magic either hadn't worked, or it wasn't working very fast.
Or so he thought.
Suddenly, his pants felt somewhat loose. He could have sworn that he'd tightened his belt earlier, but maybe the tumble through the portal knocked it loose. That delusion lasted long enough for his watch to slide off his wrist, and then his shirt to hang limply off his shoulder. Down and down he went, desperately trying to cling onto his clothing as he shrank into them. At first, inch by inch but it sped up exponentially until he was buried in his clothing like a tent. He could see a strange orange glow emanating above his neck hole, as he struggled to make sense of it all. Talk about vertigo. He was maybe 4-5 inches tall, if he had to guess, and he really didn't want to.
"Come on out then, let's have a real look at ye!" called the voice from above, now far louder than it had been before.
He didn't have much of a choice, and despite his modesty, nudity likely didn't matter to this being if it didn't bother to shrink his clothes with him. Unless it was trying to humiliate him, but all the more reason to brave it and not give them the satisfaction. Tepidly he climbed out from inside the pile of cotton and denim.