tā / cái / bú / shì / nǎo / zi / yǒu / pào / zhǐ / shì / zuó / tiān / wǎn / shàng / méi / shuì / hǎo

他才不是脑子有泡，只是昨天晚上没睡好。

He isn't stupid; he just didn't sleep well last night.