During her visit to The Graham Norton Show last week, Jessie J revealed a very strange talent: she can make it sound like she's been trapped in a box by speaking with her mouth closed. What's more, though, she can belt it out with her mouth closed, too! Jessie's been blowing us away lately with her cover of Sam Smith's "Stay With Me" and her performance in "Bang Bang" with Ariana Grande and Nicki Minaj, but seeing her do the same with her lips pressed together really takes it to another level. Don't believe us? Watch the video above and just try not to wish for a whole "inside the box" album.