Taylor dissed Justin!

Backstage at the Billboard Music Awards, Taylor Swift famously stuck her tongue out at on and off again couple Justin Bieber and Selena Gomez. But even juicier, Tay dissed Justin again! in an interview. When asked what she and Selena were whispering about when Justin accepted his two awards, she shook her heard andd replied, "Ohhh, you don't want to know." Ouch!