Who is Prajakta Koli? Prajakta Koli, widely known as Mostly Sane, is an Indian YouTuber, actress, comedian, and content creator. She was born on June 23, 1993, in Mumbai, India. She gained fame for her comedy sketches, vlogs, and relatable content on her YouTube channel, which has millions of subscribers. She started her YouTube journey in 2015 and quickly rose ...