"Curtain" trended worldwide today with j-hope's clapback to Conan O'Brien in friendly social media feud.

This all started with an episode of RUN BTSwhere members played a game and were instructed to call out a celebrities' name as fast as they can. 

A picture of US Television Host Conan O'Brien prompted j-hope to confidently yell out "curtain!"

Conan O'Brien aired the segment on his show 'Conan' last Wednesday night.

He poked fun at the mistake:

"Curtain. He called me Curtain!"

He remarked how he will now "silently resent" BTS:

'Curtain!' I'll get you BTS, oh I'll get you good. And by that I mean I'll silently resent you."

However, all jokes were made in good humour and he wished them all the best:

He concluded the segment with an acknowledgement that BTS will most likely never see his comment. 

He was wrong. 

Conan received a rare shoutout from the BTS twitter account when j-hope responded today with a kissy face and wink emoji, naming him Curtain once more and accompanied it all with a sassy selca. 

https://twitter.com/BTS_twt/status/1390593010451116032?s=20

Fans worldwide got in on the joke and trended 'Curtain' along with 'Hobi' and 'j-hope'.

Conan may have just opened up the pandora's box that is j-hope and his sassy wrath.

What will come next in the j-hope/Conan O'Brien war?