The New York City Twitter Office has a clever and wise fire safety sign, as Tweeted by journalist Vivian Schiller. While it may seem too obvious or unnecessary, smartphone users are particularly prone to taking selfies and Tweeting at the most inopportune time.

 

We’ve all been warned that it’s dangerous to walk and text at the same time… so remember, if it’s an emergency, you can probably guess that it’s even more difficult to “smartphone.”