A Very Grinch-y Christmas

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Across
  1. 2. Seasonal songs sung by intrusive door-knockers and choirs
  2. 6. A red-clothed invader of homes
  3. 7. A fat old man's preferred mode of night-time transportation on the 24th
  4. 8. A poorly-constructed decorative tassel composed of myriad reflective tendrils
  5. 9. A massive feast, or possibly a microwave meal preceding the Queen's speech
  6. 12. Adornments for trees and houses, and anywhere else that control has been lost
  7. 13. A red-chested bird or Batman's famous sidekick
Down
  1. 1. Blinding and garish seasonal illumination of tress, streets, and trashy houses
  2. 2. An obligation that sees the Royal Mail slow to a crawl over the Christmas period
  3. 3. A once-proud mystical race reduced to menial, unpaid labour for an old white man
  4. 4. A workplace gifting ritual designed to highlight disparate expectations and foster resentment
  5. 5. Unearned treats given to fortunate children and adults who are owed something
  6. 10. A reindeer famous for his reflective facial deformity
  7. 11. The white killer of old people and closer of schools and roads