A trope, usually appearing in science fiction, where something directly contradictory to the pre-established science of the world happens.

Origin: The characters in K. A. Applegate's Animorphs series did a scientifically impossible (both by real-world physics and the fictional universe's) maneuver that the fandom refers to as the 'bird parachute'.
"Wow, those characters totally bird parachuted there!"
by Our Lord Pickles January 7, 2019
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