I was showing this to my daughter and she reminded me of this....
We were eating at one of our fav. Mexican rest. and they had a new waitress who was very odd....anyway, they didn't bring the lemon for my water....well they normally will bring several lemon slices on a little saucer, but this time, she just carried it FROM the kitchen to our TABLE with her BARE hands AND put the lemon into my WATER for me!!!
Can you imagine! I immediately grabbed a nearby waiter and asked for a brand new glass of water....