The act of shouting out where you are from at a public event, in an especially loud and douschely manner. Also shouting "brah" very loudly to people you don't know.
Announcer: Now trying his 1st attempt to dunk on the 6-foot hoop, from Lakewood High, Douschey Douscherson.
Douscherson: What? What? Yeah! LAKE-WOOOOOD!
People in crowd: I hope the guy with the dousche shout falls on his face.
Dude in a bar: Hey brah! Come mere brah.
Other random dude: what do you want dousche-shouter?