"The Trending 20" is a regular series where we round up interesting, informative and hilarious tweets from worldwide Twitter trending topics, fueled by young tweeters on the interwebs. Have one to submit? Give us a shout @HuffPostTeen.
According to the worldwide Twitter trending topic on Friday evening, teens across the Twitterverse are saying "WTF!" this week about 3 things: school, final exams, and that little boy band and pop star coupling you may know by the name of "Haylor." Click through the slideshow below for 20 responses and share your own #WTF moments in the comments below or @huffposteen!