What possessed somebody to do something? - Idioms by The Free Dictionary
what possessed somebody to do something?
What possessed (someone) to (do something)?
Why would someone do something so reckless, foolish, or dangerous? What possessed you to participate in a road race? You could have gotten yourself killed! What possessed them to discontinue such a popular product? They were selling like hotcakes!
what(ever) posˈsessed somebody to do something? used to ask why somebody did something bad, stupid, unexpected, etc: ‘She drove straight to the airport and got on the first plane.’ ‘What possessed her to do that?’This phrase refers to the belief that people can be controlled (‘possessed’) by an evil spirit.