Cher believes in life after ... death -- claiming ex-husband Sonny Bono's ghost not only lingers around ... but still pulls pranks on her!
When asked about her thoughts on ghosts during a recent AMA (ask me anything) on Reddit ... Cher confessed she's a hardcore believer -- 'cause Sonny still messes with her from beyond.
"I actually think that Sonny makes a light go on (in the house)" Cher revealed, adding, "I have a beautiful chandelier that he makes the light go on when it is impossible, there is no power on."
