If The Joker were to write a wedding invitation... what would he write?

I'm asking because my fiance and I are planning a Halloween wedding. And he's just a *LOT* obsessed with The Joker. Honestly, biggest fan I've ever seen. His idea, and I'm all for it, is to have us dress as The Joker and Harley Quinn.

He had this idea for invitations. He wants to do audio e-vites, and he wants to have a friend of his who's especially good at mimicking The Joker's voice read them. He wants to make the wording sound like something The Joker would say, and so I'm gleaning ideas. Anybody got any?