It all started when J.K. Rowling tweeted that she captured a HUGE spider in a jar, captioned, "I am a strong, independent woman. Also, thanks very much to my husband for dealing with this so I could go through the door it was blocking."
Ari noticed the tweet, and had the BEST response ever.
"arania exumai " she wrote.
If you don't know WTH that means, it's actually referencing a spell that Harry uses when he and Ron meet the Aragog in the Forbidden Forest in Harry Potter and the Chamber of Secrets.
In 2014, Ariana made it well known that she was a total Potterhead. She tweeted, "when in doubt.... reread the entire harry potter series."