kkdroog
Short for 'kankerdroog', Dutch for 'fucking funny and a bit serious' (Litirally means 'Cancer Dry', since the Dutch like to spot with diseases).
Radek: Have you seen EpicBeardMan?
Menno: Haha dat filmpje! KKDROOG!
Menno: Haha dat filmpje! KKDROOG!