Sara Ali Khan is clearly having a gala time at home while being quarantined. We all saw her throwback video where she could be seen dancing her heart out. She also spreading some laughter through her Instagram video in which she was seen playing the classic Knock Knock joke with her brother Ibrahim Ali Khan. Now, the actress is back with the funny game and we can't stop our laughter.

Sharing the video, she wrote, "For now, we all live under a rock. All of us- the nerd, the jock. In the meantime Ibrahim and sister you can mock. While we do our favourite Knock Knock. #knockout (sic)."