This ad is from the episode The Great Batsby / Big Time Gold Rush.
Summary[]
The Fresh Beasts Band is a parody of the Nick Jr. series, The Fresh Beat Band, starring Beast Boy, Beast and Beast (comics).
Trivia[]
Transcript[]

Announcer: Get ready and clap your hands for The Fresh Beasts Band, it's Beast, Beast, Beast, and Beast Boy!
*all 4 beasts play there instruments*
Beast: Hi, Everyone! We’re gonna play a song today called "Who clogged the Sink?"
All: 🎵 It was all of us 🎵
Beast: Thank You!
Announcer: All that was a song about shedding, on the next, Fresh Beasts Band!
Twist: Uh, are they mocking us?
Kiki: I don't know, I've kinda like them.