What is a pig crossed with a pineapple?
A porkypine!
What is a pig crossed with a pineapple?
A porkypine!
This is a pun where the answer, 'porkypine,' sounds like 'porcupine,' which is an actual animal. The humor comes from mixing the idea of a pig with the sound of a porcupine, and using 'pineapple' to set up the pun.