Mordecai and Rigby: Ringtoneers

Synopsis
Mordecai and Rigby slack off and try to write a song that will become a hit, but as usual they fail. So, they decide to do something involving telephones.

Plot
Mordecai and Rigby try to write a hit song. When their coworkers doubt it, the duo try to prove themselves by showing their song to a record company headquarters (Really Cool Records). When that fails, two members holds, pushes and throws Mordecai and Rigby, and Mordecai and Rigby propose a variant of their song as an idea for a ringtone (though they keep it to themselves).