Oh, I (finally!) get it ..

[Chips Rafferty]

...USMB stands for United States Military’s Bath-house!

Closet gay overcompensation virtually ejaculates over the top when these tortured men channel their fear of being sissies into reckless military adventure and expenditure.

Never leave your Buddies behind!

Semper Bi, Boyz!

 

[Chips Rafferty]

Not the Christapitalist regime’s own Cruella de Vil; not our exhibition Black Womyn, Condomgreaza!

She couldn’t possibly be a strapadicktome.

Her cotton pickin’ family have been Rice Chrischuns since they were servile white arse kissin’ slaves!

 

[Psychoblues]

The acromyn USMB stands for a lot other than an actual United States Message Board but I don't think it even comes close to your analogy.