I am also at loss to see some of my friends just bend their tongue to make huge noise through whistle and that would be truly responded. Why many people want to see the movies in theaters beause of this reason that the audience would whistle, make noise and hoot for every good performance, chasing and fighting. Whistle making is the personal trait for many and we cannot copy it. Some use their two fingers pointed fingers to make the whistle noise, What ever it is I always enjoyed the whistle sound and I encouraged those who make the noise in different style especially during functions.
K Mohan @ Moga
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease