So both episodes can be watched here
https://www.hotstar.com/tv/sagala-vs-ragala/s-1561
They start at about the 25 minute mark in both episodes, though the tickling, and the reactions are much better in episode 1.
I don't speak Tamil (the language) but from what I gather, it's a show where celebrity contestants are invited to do tasks. It looks like answering questions/quoting famous movie dialogues while tickling is a consistent round, since they did it in both episode 1 and 2. It's amazing!
I can tell you one thing though - it's on a big TV channel in south india, and it's also being streamed on India's largest streaming service (hotstar, owned by 21st century fox)
Hope this helps! I'd recommend checking this show out every once in a while if it's a regular round.