George Carlin, in one version of his "Seven Words You Can Never Say on Television" routine, had a bit about two-way words. As in "Cock is in The Bible" and "We're gonna snatch that pussy and put him in a box.""rooster", "donkey", and "house cat"
Steve Martin had a line about meeting a women with "the best pussy . . . . Hey, I'm talking about her cat! . . . . That cat was the best fuck I ever had."
I have a picture of a donkey in my office. With the caption, "Hemorrhoids are a pain in the . . ."
Speaking of which:
There was a young maid from Madras
Who had a magnificent ass;
Not rounded and pink,
As you probably think—
It was grey, had long ears, and ate grass.