30. This simple, yet effective, clapback:
Thanks.
29. When somebody called her a nerd and she responded perfectly:
Obviously. Duh.
28. When she recognized her haters:

27. When she just couldn't take people fighting her over tea:
.@Tucker12456 They're only tea bags. Let it go.
26. When she clapped back at this person she ran into IRL:
To the gentleman who stepped off a crowded escalator, stopped dead to answer a text message, then got aggressive with the four people who unavoidably collided with him: I hope someone was dumping you. #ChristmasShopping
25. When she wanted people to be educated about Harry Potter before they attacked her:
Nicolas Flamel doesn't die in the Potter books. Seriously, read before you burn, it'll make attacking me so much easier. https://t.co/cU8AOMS21F
24. When she simply replied with a spelling correction:
@ChrisDarroch2 and you can't spell "Slytherin".
23. When she shut down this troll by completely ignoring their negativity:
I think he's got a crush on me.
22. When she let everyone know that there's not just one way to earn success:

21. When she came after this person's Twitter pic:
Unless you're actually a hooded chihuahua, I'm pretty sure I win on the 'not hiding' front. I quite like 'old whore', though. #Shakespearean https://t.co/0pIEVfrGn7
20. When she commented on people being confused about female orgasms:

19. When she had enough of people telling her that Cursed Child was a prequel:

18. When she shook off this Twitter troll by mentioning all the powerful women standing beside her:
.@DynamiteTom Gosh, no, I've got several million women sitting beside me.
17. When she had the perfect response to this person who was questioning her choices:

16. When she called out Donald Trump for using all caps:

15. When people were sharing a meme about her dying and she just wasn't having it:

14. When this person tried to shame women who watch the Fifty Shades movie, and she felt sorry for them:

13. When she had some thoughts for her haters:
If you're waiting for universal popularity, you'll be on Twitter a VERY long time. xxxx
12. When she completely roasted this Twitter newbie:
A baby orange Twitter egg! They're so cute at this age.
11. When she tweeted this perfectly punny clapback:
They see me Rowlin' They hatin' https://t.co/dfiqou7vpD
10. When she gave this perfect response to people hating the idea of Dumbledore and Gandalf getting together:
.@WBCsigns Alas, the sheer awesomeness of such a union in such a place would blow your tiny bigoted minds out of your thick sloping skulls.
9. When she recognized the truth behind this statement...then continued to be herself:
In fairness, I *am* pasty. Not going to shut up, though.
8. When she put this person in their place:
In - Free - Countries - Anyone - Can - Talk - About - Politics. Try sounding out the syllables aloud, or ask a fluent reader to help. https://t.co/K1j19EIU5f
7. When she went in on this faceless Twitter troll:
*sighs* Well, who knows? If I try harder, I might be reincarnated as a lonely virgin hiding behind a cartoon frog.
6. When this guy came up with the idea of men wearing "penis hats", and she saw the perfect opportunity:
Every man who feels this way should wear his penis hat with pride.
5. When she roasted this Twitter troll when they came after Serena Williams:

4. When she went after Piers Morgan during their Twitter feud:

3. And then, when she used a subtle Harry Potter reference to shut him down even more:
.@piersmorgan If only you'd read Harry Potter, you'd know the downside of sucking up to the biggest bully in school is getting burned alive.
2. When she shut down haters over Harry Potter and the Cursed Child casting news:

1. And finally, when she wished this person all the best when they threatened to burn her books and movies:
Well, the fumes from the DVDs might be toxic and I've still got your money, so by all means borrow my lighter.