Add snorting Smarties to the list of dumb ways kids are mimicking YouTube videos and harming themselves? Officials at a Portsmouth Middle School in Rhode Island warned parents last week that they recently became aware of a trend where students were crushing the classic candies into a “fine powder” while still in the wrapper, then either putting the powder in their mouths and exhaling it through the mouth or nose like cigarette smoke, or using a straw or rolled up piece of paper to snort the powder as if it were cocaine. The warning conjured up recent reports of kids trying similar stunts, like the dangerous “cinnamon challenge” and “ice and salt challenge,” to the concern of local parents and doctors.