Shouldn't this be "ass over t*t"? I'm confused.

Independent Online Edition > Profiles:

Accepting Best Actress award for her role in Elizabeth I at last week's Emmys, Helen Mirren joked: "My great triumph is not falling a*** over tit coming up those stairs." Having forgotten her high heels, she revealed, she had been forced to buy a pair of plastic "stripper's shoes" from Sunset Strip. The speech was vintage Mirren: witty, unpretentious and a touch bawdy.