• What are some of the worst things people do in public? 
• Does it bother you when people talk loudly on their phones? 
• How about smoking and throwing their butts on the ground? 
• When you’re out in the open, you can move to a different space. But how about in enclosed spaces, like mass transit or in public buildings? 
• Eating smelly food is rude. 
• How about grooming? Clipping fingernails is nasty. Toenails would be the worst, wouldn’t it?