I understood that reference.

“Say hi to Dad for me.”
-Barley (Onward)

"At the point in time when bullets can pass through the inter-dimensional walls, when firepower takes up the entirety and eternity of space and time all beings stuck in a never-ending life and death cycle as bullets recover and destroy their bodies in quick succession, no one able to think about anything but the sheer force of the bullets rapidly flying literally everywhere in the materium turning the warp itself into nothing but a sea of semi-automatic weaponry. Then, there will be enough Dakka. Or at least almost."

• The Emperor of Mankind, when asked about the Orks and when they think there will be enough "Dakka."