大笨蛋的小笨蛋小笨蛋的大笨蛋
[dà bèn dàn de xiăo bèn dàn xiăo bèn dàn de dà bèn dàn]
A playful, affectionate and slightly childish phrase meaning 'big fool's little fool'. The repetition emphasizes a lighthearted, perhaps endearing description of someone who might act silly or does not pretend to be too smart around each other, indicating close relationship or easygoing nature between friends.