You see a pretty pair of yellow plastic sandals. "Aw, how cute!" you say as you pick them up. You feel strangely attracted to the shoes, as if you...want to put them on. You think about it and realize that no real harm can come from doing it, except maybe stretching out the shoes and angering the former owner. You slip them on your feet and you make sure that they go on as best as possible. Then the strange feeling you had comes back but this time it comes along with a strange tingling in your feet. You sit down on the table next to you as the tingle gets stronger and moves up your legs. You look down at your feet and realize that they are shrinking to fit the shoes."Oh My God!" you gasp. Your voice is leaving you because the tinging sense is pulsing through your body. Suddenly your legs start to shrink and take on a more feminine look, and something else, something very important also starts to shrink. "Ah, my Willie!" you gasp as your best friend disappears into a quickly forming new anatomy. "Why Me!" You scream as you feel something pushing itself out of your chest. "Boobs!" You then feel your face re-arrange and your voice changes to a more high-pitched voice.
You then realize that there may actually have been some harm from putting on the shoes, not to the shoes, however, but to you.