As I'm one of the posters who stated, without a single ounce of shame, that I'd LOVE to see any kid wearing heelys fall and hurt themselves (not that I'd purposely
cause them to fall; that would be breaking the law), let me explain myself. First of all, any parent who would let their child wear and use heelys in a public place (such as a mall, grocery, WDW) has to KNOW, beyond any shadow of doubt, that they would be posing a risk to both the public at large
and their own child (especially since, at WDW, heelys are prohibited). I'm just assuming that, in that situation, the parent either couldn't find the stones to tell their little darling that, in certain situations, it's not appropriate to use their new toy (e.g., just couldn't say "no"), or they just don't give a fig
what happens, as long as their little darling gets whatever they want.
So. If and/or when said little darling rams into an adult (and, hopefully, doesn't hurt that innocent bystander) or some inanimate object, falls down, and hurts themselves, (a) the child gets some--SOME--idea that doing "whatever they want, whenever they want" many times has some not-so-appealing consequences to be faced; and, (b) the child's very probably apoplectic, looking-to-place-the-blame-ANYWHERE-but-at-their-own-feet parents get to witness, first hand, the consequences of not having told their child "no", even when it was right, proper, and
prudent to do so.
And, either way, it's tremendous entertainment for me.