“牙膏之吻”用英语怎么说？

Colgate kiss is a kiss after one of the participants has just brushed their teeth.

“牙膏之吻”是指其中一方刚刷完牙就进行的接吻。

Example:

"He kissed me last night, right after he brushed his teeth. It tasted horrible."

"Minty eh? That's a colgate kiss for you."

“他昨晚刚刷完牙就亲了我，这味儿糟透了。”

“薄荷味很浓对吧？你得到了一个‘牙膏之吻’。”