Dudu is short version of dumb dumb.
Cute nickname for stupid people.
Also my cat’s name.
A dumb person, someone who is so stupid they don't realise they are stupid.
It s nickname of a boy. He's ex girlfriend took this nick. If u read this dudu call me ks haha
Meaning what you doing in Russian language or it means your stupid
(dudue?) you are so dudue*