What started out as just a grade school excuse to wear your underwear outside your pants has spilled over into businesses around the globe. Yes, I am talking about that one day a year where techies and PR folks can come together to plan a goofy experience for their brand. These geekily gregarious gags range from new products to changing the font on their website.  April Fools’ Day is now the TED Conference of silliness; it was underground for awhile, it has captured our attention, and now everyone wants in on it.