Ah...Brigid minds me of the time Mom was making a chocolate pie but couldn't find the double-boiler to melt the chocolate in.  So she tried two saucepans instead.  Unfortunately they were kind of a close fit. And she wasn't paying attention when the water boiled in the lower one.  Can you say "steam explosion"?

Chocolate everywhere.

Including behind the furnace (which was in a louvered-door closet in the kitchen) when we took it out years later.

We still laugh about it, Mom included.  But it sure wasn't funny at the time.