on everyone's lips
Being a popular topic of conversation or gossip among many people. The word "layoffs" is on everyone's lips because our company was bought last month. Of course, the question on everyone's lips these days is what exactly the CEO did to get arrested.
on everyone’s ˈlips
if something is on everyone’s lips, they are all talking about it: The question on everyone’s lips at the moment is: will they get married or not?