I've finally remembered one!
At the end of the playgroup I have gone to for 10 years (and now run!) there is an optional story and song session in an adjoining room. It is usually a nice little children's bible story (church playgroup) and a couple of kids bible songs with instruments. The story is usually something harmless like Martha and Mary, Jonah and the whale etc, nothing too heavy and has been very popular with the parents and kids.
The curates wife offered to join the rota to do "See and Know" (as it's called), and on her first time she did the story of the plagues of Egypt. As she went into great detail on each plague, she was holding up a large printout to illustrate each one as she told the story. So, pictures of locusts, frogs, gnats, thunderstorms, and darkness (this was just a black piece of paper 
She got to the plague of blood. I can still see the looks of horror on the other parents and (worried confusion on the childrens) faces as clearly as if it were yesterday. In a booming theatrical voice she described the GREAT RIVERS OF BLOOOOD in great detail. She seemed to keep repeating the BLOOOOOD bit a lot. All while she was flapping a blood red piece of a4 paper.
Everyone seemed frozen like this
, and as she was about to move on to the firstborn sacrifices the usual leader who was sat with her unfroze quickly and said, "then all the people said sorry to God and everything was all okay now lets get the instruments out" (without even pausing for breath) 
I still wonder what that printout would have had on it 
It is our playgroup legend. We would joke for months afterward what she would do as an encore for Easter (They got these GREAT BIG NAILS and a GREAT BIG HAMMER......)
We have a different curate now, his wife is lovely 