When I go to donate blood I expect a cup of tea, a biscuit and a polite word of thanks... ...not a whole lot of screaming, my bucket confiscated, and a cop asking me questions.
My wife was just recently diagnosed with colorectal cancer and now has surgery scheduled to remove a couple of inches of her colon. I expect her grammar will improve as a result. Because she's going to have to learn how to use a semicolon.