Probably because I come to English from the outside, I abhor bad spelling and grammar. There's a surprising best-seller in Britain, titled EATS, SHOOTS AND LEAVES.
The book deals with bad punctuation, the premise being that a misplaced comma can be deadly. The title stems from the following joke, which I love:
A panda walks into a bar. He orders a sandwich, eats it, then draws a gun and fires two shots, wounding the bartender in the arm and just missing a nearby drunk.
"Why?" asks the bleeding bartender as the panda heads for the exit. The animal produces a badly punctuated wildlife manual and tosses it over his shoulder.
"I'm a panda," he says at the door. "Look it up."
With his good arm the bartender turns to the relevant entry and all is revealed when he reads:
"Panda. Large black-and-white bear-like mammal, native to China. Eats, shoots and leaves."