cur-mud-geon: anyone who hates hypocrisy and pretense and has the temerity to say so; anyone with the habit of pointing out unpleasant facts in an engaging and humorous manner
Take this as fair warning; my biased approach to sick humor follows:
An elderly local businessman suffered a massive heart attack at his home in the country. His family drove wildly to get him to the Emergency Room.
After what seemed a very long time, the ER doctor appeared, wearing his scrubs and a very long face, and said, "I'm afraid he is brain dead, but his heart is still beating."
"Oh my gosh," cried his wife, her hands clasped against her cheeks in shock! "We've never had a Democrat in the family before!"