Is there anything more ruthless than a vicious hangover at work?  

No. No there is not. Since a hangover is the ultimate asshole, so filmmakers Tory Stanton & Scott McCabe Two Trick Pony vilified a drinker's nightmare in the flesh. Introducing "Charles, Your Hangover," a short five-minute film about being hungover in the office. 

[H/T: Huffington Post]