Hey guys. We are doing something for all us students, trying to make our hallways easier to walk through. I need some ideas for one liners about what to say to them when they are walking while on their phones. (P.S. this is for teachers to use.)
Here's an example, right now we have,

"No texting while driving".

We can use something like that, but we need more ideas. Something catchier. Thank you all for your help.