"Yeah, that's-- Toby, shut the fuck up!-- exactly what I'm saying."Toby is Joe's dog.
On episodes that Joe records at his father's house, there is always a chance that Toby will start barking during a recording session. Joe (jokingly) yells vitriol toward him whenever this happens; Lars generally leaves this in.
With Joe having moved out into his own apartment, and the dog being a family dog that did not move with him, there was initially a good chance this gag would be retired outside of some odd situation where Joe has to record at his father's house again. However, Lars has decided to work with Joe to continue the gag anyway utilizing pre-recorded clips of Toby from early episodes, as a little joke for server members who are in the know.