so yesterday

[skyhigh0]

Hi buddies
i wanna know that what's the meaning of "so yesterday" in this lyric?

"You, you are so yesterday
Never thought youd loose my love this way
Now youve come back begging me to stay

Say, you, you are so yesterday
Wont let you rain on my parade
Dont wanna hear a thing you say
So yesterday"

thanks

[Codyroo]

"So yesterday" (in this case) is someone or something that is forgotten, outdated, and no longer needed. It is no longer part of your continuing life nor part of your future plans.

[skyhigh0]

thank you so much codyroo.
but you said "in this case".does it have another maening?
if yes,please tell me more.
thanks again

[Mely's]

Hello, I thing this is a metaphore. I understand this is writed to somebody that let cold a possible relationship, and now he or she want to start again and is surprised for not get a good answer.

[elmundodelexito]

I think, it just mean : you are a part from the past.

[Codyroo]

I used the term "In this case" because they were using "So Yesterday" as a metaphor or a slang term.