你是我孙子他奶奶你是我孙子她爷爷
[nĭ shì wŏ sūn zi tā năi năi nĭ shì wŏ sūn zi tā yé yé]
This name uses complex family relationship terms humorously. In English, it roughly translates to: 'You are both my grandson’s grandma and grandpa'. It is likely meant to be amusing or nonsensical.