I don’t know if you would call this an invention (it’s not), but it sure would be entertaining to watch a football game knowing the announcers had bet life-altering sums of money on the contest.
“Al, I have no idea how I am going to explain this to Mary. No idea at all.”
“First and goal on the 6…”
“Wait… I still have that parlay! I…”
“Fumble!”
“Gawddammit, Al!”