My Little Pony
Why do you suppose unicorns needed an additional phallus? Wasn't the horse cock enough?
I suppose it is possible the enhancement was invented to boost sales for the flailing wood nymph porn industry.
Or maybe it is just a permanent "fuck you", what with horses lacking proper digits for lewd hand gestures.
I wonder if anyone has written a book on the subject. Surely I can't be the only person curious about this.