One trend that was likely instrumental in killing any young adolescents self-esteem was the catchphrase “…not!” after a positive statement. Usually, it would go like this: “Hey, I love those shoes…not!” said the popular kid in school, followed by laughter and soul crushing defeat. The not-so-clever phrase was popularized by the hit movie Wayne’s World, but over time fizzled out when kids realized it was just a really dumb (and mean) thing to say.