Poor Eminem has another enemy: Mariel Hemingway. The 40-year-old actress — who plays Tipper Gore in the VH1 record-content labeling satire Warning: Parental Advisory — experienced a case of sticker shock herself when she first heard the erstwhile Marshall Mathers's controversial single "Stan," in which the foul-mouthed rapper sings about putting his pregnant girlfriend into the trunk of his car before driving it off a bridge.

"I was listening to it with my 11-year-old daughter and I was pretty shocked — and she was scared," Hemingway tells TV Guide Online. "It made me go, 'Oh, these labels are there for a reason.' I obviously didn't pay attention to it. So, we took it back [to the store] and it was fine."

The experience probably helped Hemingway relate to Gore, whose mid-1980s crusade against filthy rock lyrics inspired Warning (which premieres Sunday at 9 pm/ET). And although Al's better half is depicted as an uptight Washington wife in the telepic, Hemingway says she has nothing against the former second lady. In fact, she thinks Tipper should be flattered by her cheeky portrayal. "I'm thinner [in the film] than she was at the time," laughs the six-foot-tall blonde beauty. "She looks good now, but she was a little hefty then."

Ouch! Hopefully, the granddaughter of Ernest Hemingway will make good use of that acid tongue in her forthcoming memoir (due this fall). Surely, the 1979 Oscar nominee has accumulated a fair amount of Hollywood dirt over the course of her 30-year career. "I don't diss anyone, I don't say anything mean about anyone... except myself," says the actress, whose model sister, Margaux, died tragically of a drug overdose in 1996. "It's more about how yoga has helped heal things that happened in my life."

That's inspiring and all, but can we expect any juicy Tinseltown tidbits? Teases the spitfire: "Oh, absolutely!"