It is Kum Yo-il, You Bastards!
That means "Friday," but of course you knew that if you read my archives. This post is the honor Mister Myungjung at American Drums Linger, for whom my blog was his 10,000th referrer.
Some freebie Korean lessons:
10,000 = "Man" as in "Mansay!" 10,000 years, a cheer analogous to the dirty Jap cry "Bansai!"
Myungjung = "Bullseye" or "direct hit."
Hungboon = "arousal." You know what I mean.