The Homophone at the Heart of a Joke

i'm not sure if it's the worst or maybe the best joke, but i'm going to go for the worst one. You can let me know what you think. I'd be surprised if many people got this one. So, number five, martin gay used to keep a sheep in my vineyard. He'd heard it through the grape vine as by leo curse. And that is important for the sort of integrity of a joke, that these little things are important. Like, you know, the homophones have to be genuine homophones, otherwise the connection is far too weak. Ok. Did you hear this joke? Ok, let e.