The Difference between Balls and Guts

"Beat 'em guts" is a term some black guys use instead of f***. If you want to beat them guts, you want to f*** that girl.

I don't know what's funnier, the joke or the fact that people didn't get it.

is there any more to it than having balls means you're running a bigger risk?

oh no, I was talking about the 'beat em guts" joke.

ah! never heard that before. makes sense. in fact i feel a bit thick not getting it