My guess is that there is a tech geek out their creating the media players for porn sites and his whole goal in life is to get you caught watching porn. Almost every site you go to the volume either starts out at 100% and is blaring through your speakers or it is muted. If it is muted, as soon as you click the little speaker button, screams and moans will be pouring through your speakers in alarming fashion.
When this happens, I am usually quick to adjust and slide the volume bar down to about half! I like to have the audio as well as the visual stimuli when I am enjoying a classy film. After I slide the bar halfway down, I realize that this changed absolutely nothing! That last half of the volume meter controls about 10% of the volume. Gags, moans, slaps and screams are not any less indiscriminate than they were 2 seconds ago!
This is where I quickly slide the bar all the way to the bottom and play the foreign shower game? The foreign shower game is when you are in someone else's shower and you are trying to get the temperature just right. It starts off bitter cold and you wait. Then all of the sudden it becomes blistering hot. Then you start making you micro adjustments. A little this way ... to cold. A little that way ... too hot again. Eventually, you find that perfect median and can shower in comfort.
This is what it is like fiddling with the last 10% of the porn volume adjustments. I can't hear a fucking thing ... a little to the right. KRIPES! Too loud! A little to the left ... perfect. It is like when you were in the library as a kid and the librarian said 10 inch voices please. That meant shut the fuck up kids. The only person that should be able to hear you is the person sitting 10 inches away from you. That is where I want my porn volume. I want it so that the only person that can hear it is 10 inches away and that person is me.