DYKWYMTH

'Don't you know what you mean to him'. It's a phrase from HYYH The Notes. Yoonkookers (and sometimes non-Yoonkookers) use it to hurt each other's feelings on Twitter.

Yoonkooker 1: DYKWYMTH?
Yoonkooker 2: *quietly breaks down into tears*

Qute

Seokjin of BTS’s misspelling of the word ‘cute’. Can be seen during the Entertainment Weekly video titled ‘ BTS A To Z Outtakes: Wrong Answers Only’.

(The letter is Q)
Jin: Qute *pokes cheeks*
Joon: C, that’s C.