Apparently the guy came home drunk one night, and they lived in this gated community, but the guy couldn't remember the code to get in, 'cause he was drunk... So I guess he just passed out in the street. Well at some point during the night he got up and pissed on the electric fence ...

The kicker is that my sister's friend got up the next morning and went outside to find a school bus full of kids waiting for her, and her father smoking in the bushes.

I remember my Mom brought a chicken pot pie over to her house a couple of days later. The whole thing was really tragic, and it was the first time that I encountered that weird feeling where I wanted laugh even though I felt really bad for her.

In the end, I couldn't even look at her, and sure I was 10, but I guess the reason I am writing this node is that I am still embarrassed and sorry for not really being there for her.

The song Don't Whiz On The Electric Fence is indeed from the cartoon Ren and Stimpy.
The complete story behind the song is that it is from the commercial for Ren and Stimpy's favorite boardgame.

America's favorite idiot Beavis and Butthead also had a song about Whizzing on an electric fence:

When I was little and I had no sense,
I took a whiz against the electric fence.

Hurt so bad, shocked my balls.
Took a crap in my overalls.