He shot first.
Han Solo
Historically denotes "potential of Hydrogen"
pH
Evil Sonic
Shadow
Origin of the saying "slow and steady wins the race"
The Tortoise and the Hare
Oldest metro system in the world
London Underground
Conceived solely to play in the doubles matches of the original Mario Tennis.
Waluigi
Occurrences of a 8.0-8.9 on this scale are observed about once per year.
Richter scale
Katy Perry's song of opposites.
Hot N Cold
The oldest published version of this story ends with the wolf falling asleep after swallowing the girl whole.
Little Red Riding Hood
New York City Subway
[Audio Clue]
Sweet Child O' Mine
Material at the top of the Mohs scale, set at a value of 10.
Diamond
The primary opposition to the Labour party in the UK, also known as the Conservative party.
The Tories
Oldest known surviving literature, thanks to the preservation of cuneiform tablets.
Epic of Gilgamesh
Post-apocalyptic fiction novel by Russian author Dmitry Glukhovsky, set within the Moscow Metro.
Metro 2033
Japanese handheld "Egg Watch" containing digital pets.
Tamagotchi
Surname of pharmacist Wilbur Lincoln, best known for his research on the capsaicin concentration of various chili peppers.
Scoville
A figure of speech consisting of consecutive contradictions.
Oxymoron
In some motifs she is described as a repulsive old woman who fries and eats children, while in others she is a nice old woman who helps out the hero.
Baba Yaga
The only tunnel to connect two continents via an underwater railway.
Marmaray Tüneli
Fourth member of the Ghost Gang, along with Blinky, Pinky, and Inky.
Clyde
A set of red warning flags is displayed at US shores when measurements exceed a 6 on this scale.
Beaufort Scale
The emordnilap counterpart of the word "emordnilap", which is also, definiton-wise, the reverse of emordnilap.
Palindrome
Orchestral ballet by Tchaikovsky, based on Shakespeare's play of the same name.
Romeo and Juliet
The Øresund Bridge-Tunnel connects these two countries over and under water.
Denmark & Sweden