Also? Anybody remember this?

We were trying to remember tonight where this scene came from:

There was a kid sitting on the couch watching Gwar. He wasn't a main character, I don't think, just a supporting cast. And whether he fell asleep or exactly what happened I'm not sure, but the band was thanking him for being their biggest fan and begging him to play with them. Then they grabbed him and dragged him into the television.