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On this day, seniors dress up in the craziest, Halloween-came-super-early costumes imaginable, and this year is no exception - the Ui-jung-bu high school kids are out to make us laugh to death. 

In fact, the school's graduation photos are so popular online, that their hashtag #???? is trending on Twitter in Korea. 

Check out a few of the photos from this year's graduation photo day below. 

'Produce 101's "Pick Me":

'Just Do It' from 'Mystery Music Show Mask King':

AOA's Seolhyun: 

Kim Min Hee and Director Hong Sang Soo: 

'Show Me The Money' judges/contestants:

Lee Byung Hun from 'Inside Men':

Sushi:

Poking fun at Yoochun's current sexual assault cases (From his former name Micky Yoochun + hinting at cases involving bathrooms):

Kang Dong Won from 'The Priests':

Which one is your favorite?