How mature!

Selena Gomez recently appeared on BBC Switch's The 5:19 Show, and when asked about her pal Justin Bieber, the Disney cutie was definitely a bit harsh! Selena told the show, "He's a dork. He really is ... He's just not cool. I get it -- when he has his swag on, he's definitely cool, he's got it going on -- but when he doesn't, he's just funny."

Click the video above to watch the rest of her interview!