X is a song which spent 87 weeks on the Billboard Hot 100 chart, and an adjective. It’s the opening song of an album – the album’s name is something which can deteriorate due to a vitamin’s deficiency.
Pertaining to X’s use as an adjective, being X is equivalent to having Y. Y is a noun, and can be measured in fruit units of sorts (though this rarely actually done, the unit is well defined). The strong connection between X things and apocalyptic scenarios in pop culture fits the apocalyptic themes in the song.
The 2D symbol used for X things has 3 lines of symmetry.
What is X?
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