[rodeo-mamma]

I don’t think anyone taped him, I think he left a message on his son’s answering machine.

[trickyricky]

Out of curiosity I downloaded the audio.
It was a phone conversation with his son, so he must have been recording it.
Pretty vulgar language throughout.
Sounds like it came naturally.
It used to be you only heard this kind of language from the lowest class people.
What we used to call, "white trash".

[my_pointy_head_is_sharp]

I don’t think anyone taped him, I think he left a message on his son’s answering machine.

No, you must not be following the story at all. It was a private telephone conversation that Dog was having with his son. I've heard clips of it. You can hear his son saying "Dad, ...".