Lady GaGa plays the Tony Britton role

No, no, she's not becoming a doctor and moving in with her son; it's the other Tony Britton role. "Are you familiar with the term... sleeping partner?" That one.

In other words, she's bought a share in a restaurant:

The 'Poker Face' hitmaker recently became a part-owner of Vince & Eddie's in Manhattan's Upper West Side, putting her money into the longstanding Italian-American eatery.

The report says she wants to keep her involvement low-key, which seems a bit out of character.

It's a smart move, though, as she can negotiate great deals with slaughterhouses when she buys the ingredients for dresses and entrees at the same time.