What do you think they're doing again

What are they trying to copy?ㅋㅋㅋㅋㅋㅋㅋ
This is like "Sir (haengnim), you arrived?" moment 

https://twitter.com/v__vante/status/1084434191423393792?s=21

pann

(18, 0) I sometimes wonder what this kids watch sometimes ㅋㅋㅋㅋㅋㅋㅋ If you've watched what they're following, it must be amazingㅋㅋㅋㅋ a lot 

(16, 0) Isn't that Jin's shoulder??

(1 ,0) 95z just fits each other

(3, 0) Like this heh