口头禅

Pauline: 口头禅的英语是什么？

Maine: 。。。 。。。

Pauline: 突然之间忘了

Maine: 我知道了 Mouth Head Twist

Pauline called me yesterday evening and above was our conversation.

Hee still can't figure out what was that supposed to be.

Anyone who knows, pls be kind enuff to tag and provide me the answer.

Thanks!