This has become my new go-to line if I deem the class to be of appropriate levels of maturity/immaturity when it comes to dealing with cellphones in the classroom.
Conversation usually goes something like this.
Me: Put your phone away please.
Student: I don’t have my phone.
Me: Really? Cause you’re staring at your crotch pretty intently so I kind of hope it’s because you do have a phone down there.
Seriously – you’re in school. All your friends are in school. Your parents know you are in school. You do not need to be texting people. It can wait. Put you damn phone away in my classroom.