Chastise
They say using a measurement device (like a ruler) is a good way to chastise someone. They do something bad? Chastise them by slapping their wrists, their feet, their eyes, ears, anything! They say something out of turn? CHASTISE THEM!
Imagine being chastised with a measurement device. Think how horrible it would be getting hit on your knuckles, your nose, or the back of your head. It would be awful. Imagine this experience.
とう
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You're being chastised because you tried to say something in English in とうきょう. Everyone around you slowly turned around, eyes aflame and rulers in hand, ready to chastise you for uttering those forbidden words.
How could you say something in English while you're in とうきょう?! After you went to all the trouble to learn all this kanji and Japanese? Geez, we almost think you deserve to be chastised...