Rob Kardashian resurfaces on Twitter

Los Angeles: Reality TV star Rob Kardashian has made his comeback on micro-blogging site Twitter.

Rob, 28, who has been battling weight gain and depression for months, sent his elder sister Kim Kardashian many voice notes to help her pregnancy nausea, reported Us magazine.

"@KimKardashian I sent you that voice note. It should help. Wait wait wait I thought this nausea thing was supposed to be gone by now!!!! UGHHHHHH," he tweeted. "Should I post it? I think people would love to hear the voice notes u send me!," Kim, 34, replied, prompting Rob to tweet back lyrics from Khloe Kardashian's ex-boyfriend's track "Hard Work".

"@KimKardashian hard work gone pay off!! I be high off this money I dunno what they be on!!," he wrote, leaving his followers understandably a bit confused.

The siblings' undecipherable exchange comes after three months. Kim is expecting her second child with rapper husband Kanye West.