The best part of the movie is probably the group of kids (who are hilarious), including Stranger Things star Finn Wolfhard.
He was already pretty beloved by the world, but now, he's even more so.
It all happened when beauty vlogger James Charles tweeted his disappointment in the movie... five minutes in.
"Okay five minutes in and IT is already awful stay tuned for updates," he wrote.
He then got absolutely served by Finn, as he retweeted him saying, "Why are you on your phone in the movie theatre? Rule 1."
Charles quickly deleted his tweet but, as everyone is aware, the internet never forgets.
Twitter quickly blew up.
However, James took it pretty well when he saw the backlash, tweeting, "I just got dragged by a legendary child actor I'm kinda honoured."
He also uploaded a short video apologising for what he initially said, and went on to admit that the movie was actually pretty damn good.