Used a lot in Thailand, especially in an attempts to sell something but can mean just about anything depending on what the user is trying to achieve.
Q "Is this a real rolex?"
A " Yes Sir, same same but different"
Title of the amazing song featured in the 2008 Bollywood film "Bombay to Bangkok".
Also used to describe subtle nuances.
Ally: Is it just me, or does this room stink like mildew too?
Lauren: It's same same but different!
Lauren and Ally: We are same same but different, we are same same but different.
The Boys: (jealous silence)
Pertaining to the nature of lady-boys in Thailand.
When the two breasts look same-same like a woman's but the dong is still there.
Bob: I was grinding with a girl and I think I felt a lump.
Jack: Same same but different.