Shrooov is an emotion, expressed out of jealousy combined with an evil plan of attack. The term was first used in 'Coimbatore Mappillai', a tamil movie released in 1996 for Karan anna and rediscovered by karanians in 2018.
An exclamatory phrase enunciated by vibrating the lower part of the vocal canal producing a rapid, resonating, high-pitched sound. Currently only one person can successfully perform this technique.