Routine walk gets interesting

If you typically walked along the same path every morning for exercise, then one morning found a $100 dollar bill with your name and a phone number written on it along that path, would you call the number?

Might just try it. I would be fairly sure it was a weird scam or promo of some kind but the random nature of it suggests something more interesting. After all who but a neighbour might know my regular route.

(Actually, if it was in or near the spot where I go for discreet outdoor "release" I might be worried.)