This is a phrase that you have probably heard from a movie. Let’s look at how to say it properly.

Words

뺨 - cheeks ( Noun )

Phrases

뺨을 때리다 - To slap someone in the face

빰을 맞다 - to get slapped in the face

주걱으로 흥부의 뺨을 때렸어요 - She slapped Heungbu's cheek with a rice paddle ( Informal polite )