April Fools' Day

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Across
  1. 2. Forget the mayo! This is what you get on your Chocolate Whopper instead
  2. 4. The founder of the Virgin Group
  3. 8. The first television network to stage an April 1st prank
  4. 10. AF0104
  5. 11. LEGO’s SmartBricks helps with the pain from doing this to loose bricks
  6. 12. April Fools’ Day is tops for these people
  7. 14. The world moved from the Julian calendar to this calendar in 1582
  8. 16. A fast-food giant’s new menu item
  9. 17. Women picked long strands of this during the spaghetti harvest
  10. 18. Panorama claimed the eradication of this
Down
  1. 1. BBC made a colony of these penguins “fly”
  2. 3. Audi’s chair has these to protect the “driver” in case of an accident
  3. 4. Velveeta branched out into this business
  4. 5. The Dreambird 1417 was powered with this type of energy
  5. 6. Audi’s chair uses this built-in technology to avoid people you don’t wish to meet
  6. 7. Chegg’s pillow transfers knowledge while you are doing this
  7. 9. Just lick the top of this to start your new Lexus
  8. 12. Cups of whipped cream for dogs
  9. 13. In the Kids Class cabin, kids could play this down the aisles
  10. 15. Pupbucks is this kind of chain for dogs