Minnie and Moo Go Dancing Book

Okay. I think pretty much all of my friends on here know me and know that I'm not a prude. I'm fairly open-minded. Easy to get along with. I like most things, even if it takes me awhile to get used to it.
Yet I'm left wondering if this book is the author's idea of a joke. I skimmed the reviews and I didn't see anyone else mention the things I noticed in this story. (With the exception of one reviewer mentioning the hamburger in passing.)
Sooooo, here goes.
The first thing I'll say is that the story itself, bypassing the parts I'll detail in a minute, is fine. Nothing to write home about but not awful either. The illustrations are the same. We listened to this on audio because I'm trying to introduce more audio books to both of us, and the narrator was good. She read well, did the voices well, I don't know much about narrators since audio books are pretty new to me still but I'd listen to her again.
On to the "exciting" parts now... stick with me here.
So, on page 12 we find an illustration of Minne and Moo standing up. (The first so far in the book where they're vertical.) Now, Moo is standing sideways and the reader - or looker as it is - can't see anything. But Minnie, dear, dear Minnie, is standing where we can see her front. Now, I'm no cow expert, let that be known, but I was unaware that a cow's udders looked like a penis and balls. The very word 'udders' is plural. Not singular. How many udders does a cow have? One? With a little ball sac underneath? And is this positioned right between the back legs, as if on a man? Because, ahem, that's how it's shown here.
Not a big deal you say? I agree. I just think it's strange, at least slightly distasteful and if nothing else it gives a child/children the wrong impression about cows and udders.
Now this part got to me more because it's more than slightly distasteful. Maybe I'm getting more sensitive in my old age.
Minnie and Moo go to a people party (as opposed to a cow party) and are hanging out, having fun, meeting men, all that good stuff when someone offers them some hamburger. It should be noted that Minnie and Moo had, earlier in the book, had gone to look for their friends Bea and Madge Holstein, without finding them. Can anyone guess where this is going? No? Allow me.
One of the party goers offer some hamburger to Minnie and Moo. Minnie was staring at the hamburgers, unable to speak while Moo dug right in. Minnie, taking a few tried to get it out, finally tells Moo what she's eating. As in, "Hamburgers are beef...... We are beef. Moo... you're eating someone!"
They then start to talk about who they're eating. They both assume they're eating their friends, Bea and Madge. They run out of the party, Moo carrying the plate of Bea and Madge, and commence to burying them properly.
The end of the book finds Bea and Madge meeting Minnie and Moo outside after a mix-up about them being ghosts.
I don't know about anyone else but this shocked me. I mean, this is a young child's book and me writing about what happened in the book really takes away from the shock of it. I wasn't expecting it and, just to be equal here, I will say that Julia didn't seem too shocked. She was a little surprised and then saw some humor in it, which I was able to finally do also. I suppose it was a shock but I also think it was distasteful at best. I'd have liked to have seen something else in place of this. Maybe it's just me.....