Test Your Slang!

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Across
  1. 3. Without lying, authentic, 100% real
  2. 6. The highest vow of truth
  3. 7. Overall feeling; Ms. Clasby would pass the 'check'
  4. 9. Ironically trendy
  5. 11. A sound effect, perhaps after a perfect shot
  6. 12. An imposter, perhaps...
  7. 13. If you know...
  8. 14. Most of Mr. Cermack's outfits have this
  9. 15. A term of fraternal exhaustion; no words left
Down
  1. 1. Politically aware; Ms. Holland, for example
  2. 2. A highly calculated, intelligent move; needed for Mr. Minks' tests
  3. 4. Mr. Clauss on Fortnite Friday, perhaps
  4. 5. True friend, regardless of bloodline
  5. 8. Especially good or delicious
  6. 10. "_____!" Fooled you!
  7. 15. Confident response to a challenge or statement