Green’s Dictionary of Slang

motherfucking n.

[ext. of motherfuck v.]

(US) violence.

[US]R. Blount About Three Bricks Shy of a Load 55: ‘They call it Plywood now,’ he said, ‘because so many places are boarded up. And in those alleys there’s some motherfucking going on. You got to take a stick.’.