For grown-ups, they're the three most terrifying words this side of "The IRS called": Justin Bieber's underpants.
This week in Paris, the paternity suit-embroiled pop idol suffered the inevitable consequences of styling low-slung skinny jeans, namely, a partial pantsing.
Justin, 17, was heading to lunch with girlfriend Selena Gomez, 19, when his unbelted jeans, perhaps feeling overwhelmed by the crush of fans, photographers and burly bodyguards, decided to quit and head south to parts unknown.
But to Bieber's credit, he kept his cool. Click on to see more ...