It's a reference to how Lisa's voice is on their song "Walk It Back" from Sleep Well Beast, in particular the spoken section, quoting Karl Rove whom they sent the song to for him to review knowing that he wouldn't like the quote being on there (hence why it haunts him). She is neither embarrassed nor outraged because she understands that Matt was joking about that since they worked together on the song to begin with.
@@didoma73 ah right my bad, yeah not too sure on that as well, watching the full performance doesn't provide much more context either I figured it might have been something that happened during the concert off camera or maybe some sort of inside joke of some sort but I definitely don't think he was being serious. At one point in the performance he jokes about how Bryce's 6 month old kid wasn't at the concert and all too so I don't think he meant anything bad about it but it definitely sounds weird from the outside without context
