It's much too late Porcupine.

The story:

I hadn't heard this song in a number of years. I heard it playing in a supermarket and belted out my version replete with the porcupine lyric. After my girlfriend stopped laughing, I justified my interpretation of the lyrics as that I **sumed that the pet name for his girlfriend was porcupine, perhaps because she had a p***kly nature, or since he's from Britain, maybe they call girls porcupines there.