Just to warn you right now, this story is a little gross.
When I was about 6 or 7 (I thought I was younger, but a cursory Google search leans more toward the early 80s), 9-Lives used Sylvester from the Warner Bros. cartoons to shill for their cat food.
I found a picture of a cel from the commercial:
Now I hadn't heard about this revelation despite being a gigantic Looney Tunes fan, primarily because there was no Internet.
So one day while I was dutifully reading a book, I heard my mom call from the living room, "Jeff! Sylvester's on TV!" Again, in my memory, I'm like 4, but I guess I was older unless this started in 1978.
What my mom didn't realize was that I was on the porcelain throne. Being a fiend for any new Looney Tunes content, I stood up, opened the door and poked my head out into the hallway to see the commercial.
What failed to occur to me was that in addition to reading, I was in mid-push when my mom called me, and I was so excited that I forgot all about my lower half.
The commercial ended, and I was brought back to reality with the faintest PLOP behind me as something--I'm not saying what, but you already saw this coming--hit the linoleum floor of the bathroom.
"Moooooooooooommmm!" I called, not knowing exactly how to handle the situation.
The mild admonishment I got a minute later--next time, just wait until you're done--was worth the expression on her face when she got a look at the floor.
And thus far--knock on wood--I have not had this problem again.