Punctuation

A panda walks into a cafe. He orders a sandwich, eats it, then draws a gun and fires two shots in the air. 

"Why?" asks the confused waiter, as the panda makes toward the exit. The panda produces a badly punctuated wildlife manual and tosses it over his shoulder. 

"I'm a panda," he says, at the door. "Look it up."

The waiter turns to the relevant entry and, sure enough, finds an explanation. 

"Panda. Large black-and-white bear-like mammal, native to China. Eats, shoots and leaves."

From the book- "Eats, Shoots and Leaves" by Lynn Truss. 

I'm an English teacher and a lot of the students I have suffer from the inability to use punctuation or use it correctly. I wish I could make this book a requirement; it's a "zero tolerance approach to punctuation" which I think is great! I also wish punctuation was the only problem, but most of the time the grammar is worse. That's when I would like to recommend "The Elements of Style." 

I should share some of the hilarious mistakes but somehow that just seems wrong. There are days I really struggle to keep reading the essays they turn in. That's when I wander over to facebook and blogger instead! 

(I am in no way suggesting that my use of punctuation is always correct... I have the book for a reason.)