noun- 1.A bro whom is so chill that he can teach non-bros how do be more chill. 2.The supreme bro that all other bros respect without question.
1: Hey, where's Kevin?
2: Oh, Kevin's teaching some non-bro how to be chill.
1: Bro, he's a brotal Brole Model to bros everywhere.
2: You brow it, bro.