Rob Kardashian makes rare cameo in Khloé Kardashian’s 40th birthday celebration clip

Khloé Kardashian recently shared celebrating her 40th birthday and The Good American star posted a video showing herself blowing out the candles on a birthday cake.

Although it's not confirmed if the clip is from this year or a previous birthday, it did feature a rare appearance from Khloé's younger brother, Rob Kardashian.

Kardashian can be sitting besides her best friend, Malika Haqq, Rob is spotted being seated next to her grandmother, Mary Jo Campbell.

Rob is seen putting his hands over his mouth and yelling at his sister as the table sings "Happy Birthday" to Khloé.

Rob wrote in the comment section of the post, wishing her, “Happy Birthday scooby boobie.”

Khloé had a sweet response ready for her brother, as she wrote, "I love you my favorite human," and he wrote, "I love you," as a reply.

Rob has chosen to avoid the spotlight following his breakup with Blac Chyna and the cancellation of his reality spinoff, Rob & Chyna, not being seen in many family photos or posts in recent years.

He hasn’t been seen in front of the camera besides his siblings, Khloé, Kim Kardashian, Kourtney Kardashian, Kendall Jenner or Kylie Jenner on the family's Hulu series, The Kardashians.