What does an upside down smiley face emoji?

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Tags

1. #goofiness
2. #implemented
3. #irony
4. #joking
5. #added
6. #upside
7. #smiling
8. #emoji
9. #sarcasm
10. #sense
11. #commonly
12. #silliness
13. #platforms
14. #version
15. #unicode
16. #slightly
17. #approved
18. #flipped
19. #convey