In Britain, popularity seems to be different to in the US. Instead of wealthy or never seeming to feel pain, these low-life individuals normally have split-up families, are almost always working class and are what a lot of people call 'chavs'.
The girls dress like prostitutes, are usually thick and are total bitches to everyone but other popular kids.
The guys always act tuff and are almost always into rugby or football. The normally put on low voices and are normally chavvy themselves. The push people around in the corridor like bulldozers and are all-round general dickheads.
Hey, you see those popular kids? Complete dickheads.