Saying Hello to God. Sri Sailam. Andhra Pradesh

I went with a group of indian tourists to visit all the sites around Sri Sailam, a superb place.
This Nandi, Shiva's mount, was on top of a hill. Everybody going there was doing the same thing, I was wondering what it was. A lovely lady asked what they were doing, the answer came : "Saying hello to God".. I liked it..
A nice answer I thought....