On Sunday, Demi Lovato was responding to fans on Twitter. One fan asked her what the funniest prank she pulled was. And in a now-deleted tweet, Lovato said her funniest prank was calling "a lady of the night" to surprise her bodyguard. She says the sex worker went into his room without his permission and "grabbed him in his 'area.'" People weren't happy with the tweet with some calling it sexual assault.