You see a $50 bill lying on the floor of the Grand Central Station.
About 20 minutes later you are back at the Grand Central Station and you see a $50 bill. As far as you can tell it's on the same spot where you saw it earlier.
However, you are returning from a surgery and lowering yourself to pick up the bill will hurt. The pain is negligible compared to how happy the $50 would make you, and the maneuver will have no lasting health consequences, but if you do it and you don't become $50 richer it will be deeply unpleasant.
Do you bother trying to pick it up?
1,000@MGCoin it might be gone by the time you find a grabby thing.
The real cheat is pretending you dropped it and asking someone to pick it up for you.
Unfortunately, the surgery also damaged your vocal chords.