Rob Kardashian and Blac Chyna are really the worst at not posting pictures . Weeks after their self-imposed social media blackout, Rob is back at it again with the bed posts.This time, Rob shared a makeup free pic of Blac Chyna as she relaxed in bed, presumably after a long night of dancing in Montego Bay. The couple is vacationing there, and Chyna is showing off a variety of looks.“Young,” he captioned the post.