What does Natasha say to Hulk to calm him down?

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Tags

1. #happened
2. #actually
3. #widow
4. #black
5. #going
6. #singing
7. #starts
8. #ultron
9. #mantra
10. #little
11. #natasha
12. #avengers
13. #which
14. #trying
15. #getting
16. #bruce