@BTS_twt : 형이 왜 거기서 나와..? #택시 #깜놀 
[RM]
Trans @BTS_twt :Hyung, why are you appearing from there..? #Taxi #Shocked [RM]
(T/N: The line is a meme that originated from a 2014 ‘Tempation’s Giant’ special episode of MBC ‘Infinity Challenge’, where the caption “Hyung, why are you appearing from there..?” was added to a scene where Jung Hyungdon was pranked and showed a reaction of being genuinely shocked to Yoo Jaesuk suddenly appearing.
Since late 2016 the screen cap and phrase itself have been reused and gained traction as a meme response to any situation where someone/something misfitting to the situation appears out of the blue.)
Credits :
Trans : Denise @ bts-trans