ha haha ha haha haha ha haha haha haha
The sound Mandark makes when he realizes he's been outsmarted by Dexter, but still too proud to admit it.
Mandark: ha haha ha haha haha ha haha haha haha
He laughed like a man who just got robbed but still thinks he's the thief.
He cackled like a chicken who just got roasted.