nudge nudge, wink wink

Từ điển Oxford Advanced Learner 8th

ˌnudge ˈnudge, ˌwink ˈwink | a ˌnudge and a ˈwink idiom
used to suggest sth to do with sex without actually saying it
•They've been spending a lot of time together, nudge nudge, wink wink.
Main entry: ↑nudge_idiom