They have a solution for those kind folks.
A guy went to a restaurant and ordered the meal , then waiter asked do you like to have some soup . desi said no I do not have enough money to cover soup order waiter said it is free . so desi said it is alright then bring me some.
Next day desi went in and ordered the soup only and left after enjoying it , then he came back next day too , the third day and fourth , his room mate asked him hey buddy you are not eating dinner now a days desi told him the secret . next day when this desi went to restaurant to enjoy the soup the waiters were ready with a soup full of powerful and potent laxative . The guy ate some soup and needed to use the toilet , waiters were ready for that too and they had locked the toilet , they wanted to punish this cheepoo. Now desi started to run to his house leaving a line behind him as he could not hold it any longer. When he reached home his friend asked him where is that restaurant where they serve the free soup , desi pointed to the line behind him and said " follow this line"