Digital Spy recently sat down for a surreal and funny four minutes with the comedy duo to discuss everything from punching The Artist's loveable pooch Uggie (who cameos in The Campaign) to Galifianakis's traumatic home-schooled childhood.
Asked about his character Cam Brady's tussle with a baby and Uggie, Ferrell quipped: "Please don't take this out of context. I felt guiltier punching Uggie because I'm telling you, that baby deserved it.
Galifianakis also discussed whether or not he would "take Ferrell Between Two Ferns" in the near future, saying: "[If that question] is sexual, if it is what I think it is, then tonight at 8.30. After we drop the E that we like to drop every night."
Ferrell joked: "Then it's on. Much against my will, it's on. Pun intended."
The Campaign opens in UK cinemas on September 28.