Phlegm

When you are travelling in a bus and suddenly you cough up some phlegm in your mouth, what would you do?  Would you swallow it? 

That was what happened to me. I did not have tissue paper and I didn't want to use my handkerchief. So I held it in my mouth until I alighted at my destination. Then I disposed of the phlegm at a grass patch nearby. 

By the way, phlegm is the thick slimy substance produced in your throat especially when you have a cold. So what do you think a phlegmatic man means?

Well, it is not a man who often has phlegm. Phlegmatic means calm and not easily excited or worried.