Q1: sexed up =?Dr Kelly had examined the Government's 'sexed up dossier' which declared that Saddam Hussein had weapons of mass destruction which could be activated in just 45 minutes. The claim was used by Tony Blair in 2002 as the central justification for the Iraq war.
When Dr Kelly secretly revealed his doubts about the dossier to BBC reporters, all hell broke loose.
Q2: all hell broke loose =?
Can I say the book is sexed up if I mean the book is very interesting?
Is the phrase related to sex?
It doesn't really have a lot to do with sex as such. Only if you had perhaps a very bad romance novel and it was rewritten to be more sexy. But generally, no, it's a metaphor.