At the local gas station:
Cashier: [ Rings up a soda. ] That’ll be $1.05.
Me: I think you undercharged me. It should be $1.16.
Cashier: Huh…? [ Re-rings up the soda. ] Oh. You’re right. That’ll be $1.16.
Me: Here ya go.
Cashier: You know, not many people would be honest about something like that.
Me: Trust me, that wasn’t my sense of morality acting up, just my sense of math.