So, this is the captions and the shouted commentary–obviously they’re singing “Make It Rain,” which is mostly what’s subtitled (you can see that translated here ETA: Now the video itself has been translated, sort of–click the “CC” button for English subs), and the first few things P.O shouts are just lyrics from the song.
Live in the waiting room -Block B’s Bastarz-
P.O: We’re at the top!
P.O: It’s not my problem!
P.O: Yeah, we’re at the top!
P.O: Bingle Bingle!
A lyrical twist
P.O: What are the lyrics?
U-Kwon: It’s our turn! It’s our turn! We’re coming out!
P.O: Get out of the way, manager hyungs!
U-Kwon: Stay on the beat!
P.O: Oh, man, how long will it take to clean all this up?