Old Memes

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Across
  1. 2. it's over nine thousand
  2. 5. hampster dance
  3. 6. boom goes the dynamite
  4. 8. star wars kid
  5. 9. kilroy was here
Down
  1. 1. I can has cheezburger
  2. 3. numa numa
  3. 4. all your base
  4. 7. orly