Now that i'm a swiftie and a Marvel fan i realized that this lyric feets perfctly into Black Widow. Because she looks like a beautifull woman but she can kill you. There is a scene in the begining of Captain America The Winter Soldier that just proves it.
The quote is from the song Unsteady (Erich Lee Gravity Remix) by X Ambassadors from the movie Me Before You. A good friend of mine made this with the Easel app, only available for the iPhone. She gave me permission to share this amazing picture with you guys.