Had a cat we called Butthead (we cleaned the name up a bit). The neighborhood kids loved running around yelling for "Butthead."
Years ago I had a next door neighbor with a cat named "J.O."
You can probably guess what that stands for.
No one mentioned the movie Silverstreak, which I thought was a riot. When Gene Wilder confronts that stupid sheriff and calls him every name in the book, it always cracks me up.