I know very little about this, (and it will probably show), but one or two of Garry and Vera Aspeys songs might do for you, "DON'T GET MARRIED GIRLS" for instance, mainly a female part but with the odd male interjection.
Or how about Jake Thackray's "THE NURSE"? I've heard that one done by 1812, marvelous.

I must admit that I love this type of song, so funny, and there must be loads of stuff out there for you to adapt.

Some of the far more knowledgeable people than I out there will no doubt give you lots more, I can't think of any more at the moment, (my four brain cells are refusing to co-operate).

The very best of luck with your search, and keep singing these, we love'em.

Cattail 0~