What is So Yesterday?
1.
Something which was once popular, until it went uber-mainstream, and has now become passé
Grunge is so yesterday, get over it.
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2.
Horrible song by the gay singer Hilary Duff.
Also, something said when something is out of style
Kung-Fu Jesus is so yesterday!
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Random Words:
1.
Used when a group of people are sneaking around outside in the dark, for example trying to steal something from someone's back yard..