This wonderful moment in local news history was broadcast recently on Chicago's WGN. Please note the children in the background.
Here's how I imagine the conversation that led to this segment going down.
REPORTER: Hey, what's up with that saw and the metal box on your crotch?
LADY: It's for this thing of when I, like, jam the saw against the metal box.
LADY: To make it look like sparks are coming out of my vagina. Want me to do it on camera? Maybe in front of some small children?
REPORTER: [Thinks for 15 seconds] Sure.