Who are these roving packs of strangely coiffed troubadours the kids are listening to these days? We don't really know either. And when we say we're old, we don't really mean we're all old, you know? Just, in boy band years.
In boy band years, we're all ancient.
Country of Origin: United Kingdom
Status: World domination
Description: No matter who you are, you have not been able to resist the orbit of 1D, who are the reigning kings of boy banddom. The fivesome was originally formed on the British TV show "X Factor" in 2010, after all of the bandmates auditioned separately. They didn't win, but by the time the show was over, their careers were already taking off. Now, you literally can't go anywhere without seeing their faces. Oh, and their fans call themselves Directioners. There's that.
Overall image: They're had their fair share of scandal (drug-smoking and relations-having), but the Brits seem to be a little more liberal when it comes to their young celebs' reputations.
Harry Styles, 20: Lead singer, the one with the crazy hair who dated Taylor Swift
Louis Tomlinson, 22: One of the other brunette ones
Liam Payne, 20: Wait, maybe that's Louis?
Niall Horan, 20: OK, he's the blond one who's Irish. He also has crazy hair.
Zayn Malik, 21: The dark-haired one with good consonants who's engaged to Perrie Edwards, who sings with another UK band (a hot topic at slumber parties)
As an adult, how creepy are you if you think they're hot: Fairly creepy but certainly not alone
Country of Origin: United Kingdom
Description: Like the start of any beautiful love story, The Wanted members met each other through open auditions in 2009. They also have the "X Factor" connection, having gained popularity after performing on the show in 2010. In 2014, they announced they were going on hiatus to work on solo projects.
Overall image: The ones that make parents nervous. The group has a reputation for being hard-partying bad boys, or, as the Brits prefer, "laddish."
Max George, 25: The one you recognize who dated Lindsay Lohan or hung out with her or whatever
Nathan Sykes, 21: The one with the eyebrows
Siva Kaneswaran, 25: The one who is essentially a human Ken doll
Jay McGuiness, 23: The one with the obsession-worthy curly hair
Tom Parker, 25: The one who needs a more Google-friendly name
As an adult, how creepy are you if you think they're hot: Not that creepy but maybe you ought to re-examine your tastes
5 Seconds of Summer
Country of Origin: Australia
Description: The group got their start when three of the members started posting cover of songs to their Youtube accounts in 2011. They attracted a following, and got major props from One Direction member Tomlinson. In 2013, it was announced they would be opening for One Direction's worldwide "Take Me Home Tour."
Overall image: Like a Hollister store came to life.
Luke Hemmings, 17: Lead singer, the blond one with the lip ring
Ashton Irwin, 19: The other blond one. Oh dangit maybe he's the lead singer? Wait no, he's the drummer. Cool, a drummer
Calum Hood, 18: Thank goodness this one's not blond
Michael Clifford, 18: He is also blond but he's the one with the crazier hair
As an adult, how creepy are you if you think they're hot: Go directly to jail
Big Time Rush
Country of Origin: United States
Description: The foursome isn't just a band, they're also the subject of the Nickelodeon show "Big Time Rush," which ran from 2009 to 2013. Yes, they are like a boy band version of Hannah Montana.
Overall image: A, uh, (slightly older) boy band version of Hannah Montana
Logan Henderson, 24: These two...
Kendall Schmidt, 23: ...are the ones that look alike.
Carlos Pena, Jr, 24: Also moonlights as a Latin recording artist.
James Maslow, 23: Hey, he was on "Dancing with the Stars!"
As an adult, how creepy are you if you think they're hot: Eh you're OK