"Keeping Up With the Kardashians" star Khloe Kardashian is apologizing after dropping the R-word in a live Instagram video on Thursday. The new mom of True Thompson did an Instagram live featuring her and her sister Kourtney doing their morning workout with their trainer. In the video, Kardashian becomes frustrated with her older sister who was trying to sync their smartphones but seemed to be having trouble. According to Us Weekly, Kardashian was heard in the video saying to her sister, "Yes, you can, you f–-ing r-----d." And as Kourtney appeared to have more trouble with the devices, True's mom...