too much sugar for those bastards
My guess would be the horribly high amounts of caffeine, in addition to the artificial colors, artificial flavors... It's not something I would consume, let alone give my kids. (Yesterday, I my kids and I were playing on the school playground and a kid who looked about eight had a jumbo bottle of Mountain Dew. I was appalled and disgusted. WHY?! I wondered if the kid's mother knew he was drinking that stuff.)