Someone on another site posted this. I like it!
"If you come to my house to enjoy dinner you eat without your cell phone. No ignorance allowed here. Waiting for an "emergency" call? Give the person my land phone number and they can call you on that line. When you are here to visit me - don't plan on playing with your cell the entire time or you can leave and play with your phone. I don't entertain with my cell - no need for anyone to do it to me either."