161. Don’t say, “Uh,” “You know.”

Silences are better.

People will count them.

It’s an annoying habit. 

162. Don’t scratch anything

You’re not a dog.

People will look at you funny.

No one will concentrate on what you are saying. 

163. Don’t shout.

It lessens your prestige.

People will simply talk louder.        

It injuries your voice.