It's a great comedy and you will enjoy it a lot but only if you are an Indian.
If you are a foreigner who is just watching this movie for a cinematic experience or because of it's high rating, then I really suggest you should not watch it. Most of you who have seen believe that it's because of Indian culture is why you didn't liked it but the reason which made this movie amazing was because of it's humourous dialogues and the manner and the language in which they were spoken,but if you are watching this movie with the help of subtitles you will never in a million years experience the feeling that this movie wants to display.