MADONNA's estranged brother CHRISTOPHER CICCONE released his tell-all book about life with the superstar because he wanted to "watch her squirm".
Ciccone published the controversial tome, Life With My Sister Madonna, earlier this month (Jul08) and he recently admitted that his revelations in the book left his famous older sister "very upset".
But the 47-year-old insists the book was a watered down version of what he wanted to publish - because his lawyers forced him to omit much of the more controversial content.
He tells MSNBC.com, "There are plenty of things I left out of the book. And things that the lawyers and editors took out." But Ciccone still enjoyed Madonna's reaction to the controversy.
He adds, "I will admit to a guilty pleasure in watching her squirm.
(Releasing the book was like a) giant f**king orgasm. Therapy I already had; this was pure sex."