It looks like a punching bag. As I punch it it stores electricity which can be released later. Go ahead and make your own I want to see what chemistry you come up with.
Does the charge come from the District Attorney?
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From the defunct circuit courts, obviously 
Don’t you need a match made in heaven to ignite it?
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Breaker boxer?
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That is actually not hard to do, just buy plenty of kids sneakers that light up when a kid makes a step, wrap them around wood log, wire them all together to a supercapacitor, and punch till your fists fall off.
I heard this joke many times in the game L.A. Noire, which takes place in 1947.
“Two peanuts were walking down the street.
One was assaulted.” 