Adults act as if they were at home in their own living rooms and comment loudly on the ages of the stars or why movies aren't as good anymore. And people of all ages crinkle candy wrappers, stick gum on their seats, and drop popcorn tubs or cups of crushed ice and soda on the floor. They also cough and burp, squirm endlessly in their seats, file out for repeated trips to the rest rooms or concession stand, and elbow you out of the armrest on either side of your seat.