A Chicago Walmart closed its doors early on Saturday due to too much exposed skin by its customers. The 1 p.m. announcement was brought on by unseasonably warm December weather in which temperatures reached nearly 60. Walmart spokesman Gerard Slingman said an onslaught of weight-challenged shoppers in tank tops and sweat shorts at the North Avenue store was too much to bare this time of year. “On the bright side, all the employees who bitched about working on Thanksgiving now have some time off,” he said. Randy John, visiting from England, said the announcement caused quite the “kerfuffle” when it was made. John said he was shocked by the dodgy number of armpit rolls spilling out of tank tops, mainly from women, but in…