Uh, Yeah

The other day I went into the Optical shop to get my glasses straightened. Eli had accidentally bopped me on the side of the head and wanked the nose pieces. I tolerated the headache until I couldn't stand it anymore and went in.
There was a lady sitting at the help desk so I sat at waited my turn.
I have to give HUGE snaps the the optician for her customer service--she had tolerance beyond what I could have accomplished.

Lady: Yes, we're leaving on vacation tomorrow and I just had to come in and get this fixed! These things are so loose they are falling right off my head, oh, and I hate that when glasses are loose, don't you? It just drives me crazy! I just can't stand it when they fall down my nose.
Optician: Yes, well I will take out the lenses...
L: You have to take out the LENSES?
O: Yes, since they are plastic frames, I will have to heat them and bend them to fit.
L: Well, ok I guess you know what you're doing. Can you look at the left lens while you are at it? There is a big scratch on there and I just can't imagine where it came from.
O: Uhhum I see it, I will check to see if your glasses are still under warranty, and if they are, we can get you a new lens.
L: I just can believe they got scratched, I am so careful with my glasses. I just don't know how that could have happened.
O: Yes, you still have time on your warranty, I will order you a new lens.
L: Do you think it could have happened when I cleaned them? I am usually so careful when I clean them, I just don't know how that could have happened.
O: No, since the scratch is straight, I don't think so, if you scratched them while you were cleaning them, the scratch would have been in a circle.
L: Oh, yes, well I just don't know how it happened then. I'm always so careful with my glasses.
O: Um hum.
L: Do you think it might have happened when I dropped them that one time?

To her credit the optician kept a straight face. I would have lost it and come back with a resounding "Um, DUH!"