I've always thought this Prince Jazzbo song "Gal Boy I-Roy" was hilarious (my favorite line being "So you tell the crowd that Prince Jazzbo is very ugly, but if I didn't ugly you wouldn't have the opportunity to use call my name in your tune to get promotion"), and always kind of wondered what the deal was and what I-Roy had done to piss him off.
So I just looked it up and found this whole discussion thread on the topic.
Listen to the song and see if you care to investigate further.
Prince Jazzbo- Gal Boy I Roy.mp3
Available on the great compilation If Deejay Was Your Trade: The Dreads at King Tubby's 1974-1977