As I recall you said that “you sound like a man with a paper asshole” was an expression that your father used and you didn’t quite know what it meant but felt that it carried an implication of effeminacy.
According to the sources below it doesn’t look like effeminacy had anything to do with it. A sampling of Google hits seems to indicate that it means ‘someone who talks a lot when they don’t know what they are talking about.’ This is not quite in agreement with the dictionary definitions below, but seems like a better fit for the Google hits I skimmed. And the colorful imagery may have resulted from the imagined noise of the wind they produced passing through the said paper aperture (see below). This expression was apparently widely used in the military.
Cassell’s Dictionary of Slang
MAN WITH A PAPER ASS/ASSHOLE: [1950s and still in use] (U.S. Black) A talkative fool – all talk and little or no action.
Chapman’s Dictionary of American Slang
MAN WITH A PAPER ASS noun phrase, black, by1970s: A person whose ideas are not important; a trivial man; = lightweight
The following Google quotes, I think, give a petty good picture of how the phrase is commonly used:
“To quote my stepfather ‘you talk like a man with a paper asshole’ meaning that you have no conception of the shit you are talking about.”
“Forgive me, but I think you’re speaking from ignorance, as you merely provide assertions and opinions without any apparent support. Translation: ‘You talk like a man with a paper asshole.’”
“You sound like a man with a paper asshole. Think of the resonance. A loud fart amplified by the paper passing through a paper asshole. Lots and lots of noise, much thunder, but no lightning!”
“Hmmm, you speak like a man with a paper asshole. You wouldn't know a good camera if it jumped up and bit you on the ass boy!”
The more Perkins speaks the more I find his ‘vast’ military background doubtful. When I served we had a saying that covered clowns like him. ‘You speak like a man with a paper asshole’”
Ken G – August 28, 2003