On Punctuations

Many years ago, my English teacher walked into our class.

"Can anyone tell me the most powerful tool in the English language?" he asked, while writing on the blackboard:

Don't kill that man.

The whole class stared at him blankly.

"Punctuations!" he exclaimed.

"Observe..."

He added a comma to the sentence:

Don't, kill that man.


"That little comma, my friends, just cost that guy his life."