Does Rob Kardashian know the secret cure for morning sickness? According to twitter he does. After, his pregnant sister Kim Tweeted that she's still experiencing pregnancy-related nausea, Rob replied to her saying "I sent you that voice note. It should help," The contents of this helpful voice note is still a mystery and whether it actually helped is yet to be seen. But despite her morning sickness Kim still has her sense of humor. Teasing her brother by tweeting, "Should I post it? I think people would love to hear the voice notes you send me!" She might not be cured but at least now she's well enough to engage in some cheeky sibling banter.