If Paul McCartney doesn't publicly admit that he was responsible for their faulty marriage, Heather Mills has threatened to release a telephone conversation she secretly recorded with her ex-Beatle ex-husband, during which he laughed at and made a derogatory remark about her peg leg. A friend of Mills has told the Sunday Mirror that "What she says she heard Sir Paul say on the tape about her amputated leg left her incandescent with rage. She says he used an insulting slang word about disabled people. That he and Stella – her arch-enemy – had a laugh about it. Heather was and still is seething about it." Meanwhile, after drama queen Mills went on TV and talked about receiving death threats and having thoughts of suicide, McCartney has filed for full custody of their four-year-old daughter.