老外(lǎo wài)

Foreigner

例：她嫁给一个老外，跟他出国了。

(tā jià gěi yí gè lǎo wài, gēn tā chū guó le.)

She married a foreigner and went abroad.

Layman; someone who is not a professional

例：你真老外，我告诉你如何用这个工具。

(nǐ zhēn lǎo wài, wǒ gào sù nǐ rú hé yòng zhè gè gōng jù.)

You’re a layman. Let me show you how to use this tool.