One who calls attention to problems people don't want to talk about, often in a fashion that offends others. Connotes a degree of righteous indignation or "uncomfortable truth".
Jim Carrey's exclamation of surprise and shock at the acquisition of new evidence, as seen in "Ace Ventura: Pet Detective". Can also denote happiness, digust, etc.
A term that misanthropists use to describe the horrible and pathetic world they inhabit. Also known as Earth. In case you didn't know, #3 corresponds to the number of the planet we are away from our sun.