你怎么比猪还笨对呀我比你笨呀
[nĭ zĕn me bĭ zhū hái bèn duì yā wŏ bĭ nĭ bèn yā]
The user may be playing a humorous self-deprecating role, expressing mock stupidity. The phrase implies the user admits to being even less intelligent than a pig, an extremely humble or jocular way to portray oneself. However, in most cases, such remarks could carry potential cultural references and nuances.