slap (someone) in the face

Translations
дать (кому-то) пощечину
Her betrayal felt like a slap in the face.
Ее предательство было как пощечина.
Definitions
To slap someone in the face means to hit someone on the face with an open hand, often as a gesture of anger, insult, or humiliation.
Words
face

noun
лицо
slap

verb
шлёпать