Lime Juice - Good for Digestion after a heavy meal?????

While doing my final year project in Bangalore, we, a group of friends used to go together for lunch. Generally we used to go to the simple hotels, have our lunch and rush back to our seats. Of course, we cannot spend the money in star hotels sent by our poor dads that time ;-)

One day, I guess, some time around Christmas, we all planned to go for a star hotel for lunch and celebrate. We have a proverb in tamil which says "Pattikaataan muttai kadayai vai polandhu parthadhu pola" which means, "A villager who looked at the confectionery shop with his mouth wide open". We all looked at the hotel like that (point to note here is, we were all from some small villages).

We had a great lunch together. We were prepared to pay the bill. Then came a bowl of water, with a piece of lemon floating in it. None of us knew what to do with it. We all looked at each other. Suddenly, one of my friend shouted "I knew what it is for. We had a heavy lunch. So, to avoid digestion problems, the hotel is providing lemon juice free of cost". Saying this, my friend started to crush the lemon in the warm water and started drinking.

We all felt proud of our friend's in-depth knowledge and were ready to follow to his foot mark. Everyone started crushing their lemon pieces. But before we put the bowl in our lips, a hotel attender ran to my friend and said politely "Sir, this is not drinking water. This is for hand wash purpose".

OK.... Now, no more questions like, what happened after that and how we all escaped from the hotel, without a piece of towel covering our faces, how we handled our friend after that, and who that friend is, and which country he is living now...

No no no... I am not going to give you the answer or clues ;-)