If you genuinely want to see Hangover 2 in Tamil, do not resort to piracy. Do this instead:
The Tamil dubbed version of is frequently cited by fans for its raw, unfiltered, and highly localized dubbing style. Often found on platforms like Tamilyogi , this version is known for using "local" slang that heightens the comedy for Tamil-speaking audiences. Movie Review & Highlights Hangover 2 Tamil Dubbed Tamilyogi
If you're specifically looking for how to access "The Hangover Part II" with a Tamil dub on Tamilyogi or similar, I recommend considering legal and safer alternatives to enjoy your movie. If you genuinely want to see Hangover 2
Someone extracted the English audio, replaced it with a third-party Tamil voiceover recorded in a home studio, and synced it poorly. The quality is abysmal. Hangover 2 Tamil Dubbed Tamilyogi