It’s unfortunate there is no “Fun” category on the forums, this one deserves it.
Just a teaser:
“every $100 bill forged is a bill the Fed cannot print”
I was also amazed to learn it is illegal to burn US dollars - one of the explanations being “it costs the Bureau of Engraving and Printing approximately 5 cents to replace a note” - come on, the government makes $100 by issuing a $100 bill, so 5 cents is nothing!