The term often refers to a stereotype of enthusiastic young fans of pop culture. She dressed like a teenybopper with flashy clothes and heavy makeup, aiming to mimic her pop idol.
Pro Tip 2/3
Common Misuse
Don't use 'teenybopper' to describe all teenagers; it's specific to those with a keen interest in pop culture. My cousin isn't really a teenybopper; she's more into books than the latest bands.
Pro Tip 3/3
Gender-Specific
While not exclusive, 'teenybopper' is usually used to describe girls or young women. The concert was full of teenyboppers singing along to every word.