Varun Dhawan's dancing prowess was on full display in his Bollywood debut "Student Of The Year". When he was asked to groove impromptu for an ad recently, he was all for it. The trained dancer had to do a jig for the 'Tibetan yak dance' ad for aerated drink brand Coke. He is seen dancing with the 'yak' and offering a bottle of Coke to it. If sources are to be believed, the ad makers insisted on not having any choreographers on set. When Varun learned that he just has to be himself and dance unrehearsed to make it look natural, he was all for it.