(adj) Used to tone up and strengthen what you mean like making something heavier,worse,better,more incredible...etc
-I can't bear with my motherfucking brother! He broke down my baby(computer) again!
-Most people are gonna have their motherfucking lessons when they face to the God
-A:Can you help me with carrying the caryall?It is really motherfucking!
B:Let's haul the ass
-Do you want me to give a fuck to your motherfucking ideas? Am I that motherfucking that your mama think?