Ella's Birthday Puzzle!

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Across
  1. 4. Right units I lost, sweet tooth (5)
  2. 5. Simpsons drunk driver follows a short increase, yum (7)
  3. 8. Clothes Not a colour! I wear a lot (5,7)
  4. 10. I rub up lumber before lasses, in uniform (7,5)
  5. 11. Place mum flew South before young sleeper (6)
  6. 13. We laughed at nothing cutey! (7)
  7. 15. Pointless pup sees green, where's my straw? ((2,3,2)
  8. 16. Hello! And pick that up! (5,6)
Down
  1. 1. She's not really that bad! (4)
  2. 2. One direction, or in NZ bird, country (5,5)
  3. 3. Pearling gives stomach ache, what number was that? (8)
  4. 6. Move boat without first who after everyone's fav Kansas companion (6)
  5. 7. Near H2O, locally (7)
  6. 9. Holy one is less fine friend (9)
  7. 11. My backward mob halved an initial slip, must see (1,1,1,1)
  8. 12. A musical hook perhaps? (7)
  9. 14. Tropical fruit resident (9)