[Quiet Man Cometh]

That comes in part from "BFG" back in Duke Nukem does it not? the "Bio Force Gun" (to name it properly) which of course, no one actually used. I'm sure the developers were well aware of that when they chose the abbreviation. The BFG appears in the DOOM movie too, and The Rock (Dwayne cant-remember-his-last-name) says what everyone is thinking. ;)