tā / yī / jǐn / zhāng / jiù / zuǐ / piáo / bǎ / kè / hù / de / míng / zì / dōu / shuō / cuò / le

他一紧张就嘴瓢，把客户的名字都说错了。

When he gets nervous, he mixes up his words and even says the client's name wrong.