Celtics' Jaylen Brown clashes with Giannis Antetokounmpo over defensive foul and fake handshake, sparking controversy in Bucks-Celtics game.

Source: https://sports.yahoo.com/celtics-jaylen-brown-calls-giannis-antetokounmpo-a-child-after-offensive-foul-and-fake-handshake-020001820.html