Some sort of Japanese meme or reference. Includes characters uttering こうですか? わかりません (_Like that? I don't understand_), whilst making some pose, usually bending.

Unconfirmed (archived) source: http://yet.s61.xrea.com/mt/archives/000108.html

Translation:

* Poster asks to be taught how to ASCII-art a specific [[2channel]] character

after which someone responds with 

* "Here, I give you parts, figure out the rest yourself"

and OP responds with 

* "Like that? I don't understand! Please explain"
koudesuka