beat (one's) chest

Translations
бить себя в грудь
He was beating his chest, claiming he was the best.
Он бил себя в грудь, утверждая, что он лучший.
Definitions
To beat one's chest refers to the act of striking one's own chest, often as a display of pride, bravado, or emotional expression. It can symbolize a show of strength, confidence, or assertiveness, and is sometimes associated with a sense of triumph or victory.
Words
beat

verb
бить
one

pronoun
один
s
свой
chest

noun
грудь