Flash Mob

Flash Mob (verb)
 * 1) to be a nerd and dress up in some non-nerd costume to meet up with all your nerd friends in public who are all dressed the same way

Examples:
 * on the Fourth of July thousands of people all across America dressed as Stephen, complete with wonkyear, tie and glasses, and put assorted people "On Notice"
 * on Labor Day thousands of people all across America dressed as gardeners, complete with rakes, hats and gloves, and began "working" on the sidewalk outside Lou Dobbs CNN studio