Money in the Meter?

Going to the big city today.  Must see a new Doctor for my eyes.  Bob of course was able to get the day off.  All the kids are in school.  He drove, I gave directions.  Right, left, he actually didn't give me too much guff.  We are going to park at a meter.  I gave him the quarters but didn't look up for a minute or two.  When I did, the words were, " How much have you put in that meter?"  "At least five quarters. Why?"  "Well I hope you saved some quarters for our meter since you just put them in the wrong meter."  We both blamed it on me not watching him carefully enough.  Wonder what the other person thought when they came out and saw all the time on their meter.