In a sale on the Mental Floss site, this delightful t-shirt: N + N compounds are notoriously interpretable in many ways, so they lend themselves to (perfect) puns, as here, where two different senses of hedgehog are both at play. hedgehog-1: the prickly creature. From NOAD2: ORIGIN late Middle English: from hedge (from its habitat) … Continue reading hedgehogs