Cameron Diaz's new movie, "Sex Tape," had a disappointing opening this weekend, in spite of featuring the first time Cameron Diaz nude for the first time on screen. The "Sex Tape" opening had enough foreplay in the form of teaser trailers and interviews with the hot cast.

"Sex Tape," the new R-rated Cameron Diaz movie, continues a "meh" streak for the actress. Diaz might be feeling the pressure, the actress walked out on an taped interview after a question about her "Charlie's Angel" co-star Drew Barrymore.

In spite of hot trailers and star power, "Sex Tape," the new comedy starring Cameron Diaz and Jason Segel, couldn't get it up at the Box Office. It debuted at No. 4 spot on the weekend box office chart behind Disney's Planes: Fire & Rescue which came in at No. 3 with an $18 million pull, The Purge Anarchy which debuted at No. 2 with $28.37 million, and Dawn of the Planet of the Apes, that is in its second week at No. 1, pulling in  $36 million.  Sex Tape opened in 3,062 theaters, the movie only earned $15 million in the United States

Cameron Diaz walked out of an Australian radio interview being asked about her friend and "Charlie's Angels" co-star Drew Barrymore's past drug problems.

Diaz and her Sex Tape co-star Jason Segel were being interviewed on Australian radio station KIIS 1065's The Kyle and Jackie O Show on Monday. When host Kyle Sandilands asked about Barrymore, Diaz ranted"I'm sure you've never been through it... I'm sure Kyle, you've never been through a drug phase or alcoholism (or) anything like that... pretty clean, always get it right."

Diaz let Segel answer one more question, and then said "We're having to go now, sorry. They're wrapping us up."