Time Warnings

I think there should be a two minute warning when you are at a bar. or something similar to it. a 10 minute warning would be perfect. When you are with a group of people and there is a collective decision to leave there has to be a time set. "ok 10 minute warning, we re out of here in 10" thats perfect, grab ur coat, close ur check, and seal the deal with a bitch. if you need alittle more time, sacrifice or catch up later. but the spontainious just leaving is unness.