1) A bro's special writings to his favorite bro-ho 2) The emotion a bro feels when something touches him. Like when another bro gets married, has a child, or gets a new lift kit for his off bro-d vehicle
Biff: The way Buffy flung her hair around was almost, broetic
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.