Mama says, stupid is as stupid does.

妈妈说的，蠢人做蠢事。

Mama says, 'Stupid is as stupid does.

妈妈说，傻子有傻子的活法。

Mama says, "Stupid is as stupid does."

妈妈说，“做傻事的才是傻瓜”。

Mama says, 'stupid is as stupid does.'

妈妈说：‘蠢人做蠢事。’

Mama says, "stupid is as stupid does."

妈妈说，傻子有傻子的活法。