He called her "Rover".

The story:

Sometime in highschool, sitting with friend in a Pizza Hut. The song was playing on the jukebox and several of us were singing along. When they heard my version, several in the party were on the floor rolling in laughter. Why I hadn't noticed the absurdity of my version until then, I can't imagine. From that day on, whenever we'd sing that particular line, it was mandatory to add a little dog-call whistling after it.