- (idiomatic) I wish to you what you have just wished to me.
- Jack: Merry Christmas, Bob. / Bob: Same to you, Jack.
- "Go to hell, bozo!" / "Same to you, fella!"
- This is a way to answer someone who has just wished you something (e.g. Happy New Year, have a nice day, good luck, enjoy the holidays etc.), without repeating it. It can be used equally well in response to a positive or negative wish.