What does “bater no peito” mean in Portuguese?

Bater no peito is literally “to beat on your chest,” and it describes the same gesture as in English: puffing yourself up in triumph. Someone who bate no peito after a win is bragging or showing off. Brazilians use it as a contrast with humility, so a person who wins quietly and thanks others is the opposite of someone who fica batendo no peito.

The speaker praises humility and says that today you see someone win a championship, bate no peito, swear, and even dance over an opponent lying on the floor. He is not fully condemning it, since some people cannot hold back their emotion, but he wants humility in every moment of life. Note that bater no peito can also mean “to take responsibility” (bato no peito e assumo), so context decides which reading fits.