If you, like me, are saddened by your ability to only purchase egg nog one month out of the year, this is your lucky day. After seeing less apathy more cake‘s photo of it on Chains of Love, I decided I probably couldn’t survive the week without tasting Burger King’s new Cupcake Sundae Shake. I first tried the BK website, which doesn’t list it on the nutritional information with the other desserts. I then called the BK around the corner from my office, which didn’t pick up their phone. Finally, I spoke to a representative at BK headquarters, who helpfully informed me that it’s a national item that should be…