In 1965, during the first manned flight of the Gemini program, American astronaut John Young smuggled a corned beef sandwich onto the Gemini 3 spacecraft. One part of the Gemini 3 mission had been to test the effects of food on the astronauts, and also to see how well the two men onboard could work and eat efficiently and how bad the mess and odor would be.
Each official item of food had been specifically prepared as part of the test, however, unbeknownst to NASA (or even to his co-astronaut), Young decided to make an addendum to the prepared menu.
The sandwich did not fare well in space and made such a mess that the effects of the prepared food were largely untestable. Although Young was officially reprimanded for his action, this deviation in the accepted process did not damage his career, and he later landed on the moon in the Apollo 16 mission and piloted the space shuttle.
Rogue – vagrant, tramp, scoundrel; a horse inclined to shirk or misbehave; an individual exhibiting a chance and usually inferior biological variation; to weed out inferior, diseased, or nontypical individuals from a crop plant or a field; used to describe something or someone that is different from others in usually a dangerous or harmful way. First known use in 1766.