What do you call a horse that can sing?

This joke gallops straight into the realm of classic wordplay, delighting us with a clever pun. The humor hinges entirely on the substitution of "neigh," the distinctive sound a horse (Review) makes, for the first syllable of the word "natural." So, a "neigh-turel" horse is one blessed with an inherent gift for singing, playing on the idea of someone having a "natural" talent or being a "natural" at something.

While horses are certainly known for their powerful neighs, whinnies, and snorts, they're not exactly famous for their vocal range in the musical sense. That's where a touch of delightful absurdity comes into play. The mental image of a horse belting out a tune with effortless skill adds to the lighthearted fun, making this pun a simple yet effective way to combine animal antics with linguistic trickery.