a person who gets completely shitfaced then pukes up chunks of their meal usually on an innocent bystander
Buffy: I am so pissed at Liz!
Becky: WHY? What happened?
Buffy: She pulled a "chunky drunky" at the club last night, got completely shitfaced and puked chunks of her pot roast all over my new leather jacket.
Becky: Bummer! I would throw that nasty thing out and tell her to buy you a new one!