小小小笨蛋大大大坏蛋
[xiăo xiăo xiăo bèn dàn dà dà dà huài dàn]
This means 'Tiny Silly Fool, Major Naughty One'. This username portrays a playful and slightly mischievous image, suggesting someone who likes to be naughty or rebellious at times yet does not want to appear very serious.