Apparently there is a new sketch comedy show on Cartoon Network, and it's been playing a music video commercial for some time.
I think the guy singing is the voice of Finn.
I can't help but laugh at the song (in a good way). Reminds me of Lonely Island (obviously cleaner).
Edit:
Also, on Monday:
We get to see Jake and Rainicorn's puppies.
Edited, Jan 3rd 2013 7:06pm by TirithRR