It's good to recycle.
Ralph just finished having lunch with his friends and is walking to the trash area of the cafeteria with his tray.
Ralph wants to get rid of his pop can.
Ralph puts the can into the recycle bin before dumping the rest of the tray into the trash can.
Ralph doesn't feel like sorting the items on his tray, so he dumps it all into the non–recyclable can.
His friends follow his lead and sort out their recyclable items too.
His friends are embarrassed and think Ralph is lazy and inconsiderate.