An affectionate drunk who continues to seek intoxication not realizing that the festival is over. Festival Dude-bro is capable of little coherent speech, other than the often used and fully interchangeable terms , "Dude" and "Bro".
Festival Dude-bro, staggering into campsite, "Dude, lees part-y! Dude, Got any beerrrzz bro?"
Concerned Festivaler, "Dude-bro, I think you need to sit down before you fall down and drink some water."