'Daydream Mode' is when Roman has full creative control, right? So I'm just imagining like:
Remus, ranting to Janus: —as long as their beak fits through, the entire rest of them, because that's the only solid part, can squish through—
Remus: *suddenly collapses without warning*
Janus, flipping the page of his book unconcernedly: Someone must have turned on Daydream mode.