Staying too Lily to his friend's restaurant on a date. The friend told the waiter to remove the toilet. Auto dessert from stan's bill stay until the way the twenty percent on the reduced bill, which was a fifteen dollar bill

It seems like there are some errors in your sentence, making it difficult to understand. However, I will try to interpret based on the context provided:

You want to say that someone went to their friend's restaurant on a date. The friend asked the waiter to remove the toilet from the bill. Stan, the person on the date, still had an outstanding dessert on his bill. Despite this, Stan decided to leave a 20 percent tip on the reduced bill, which came out to be $15.

Here is a revised version of the sentence:

"Stan went on a date to his friend's restaurant but asked the waiter to remove the cost of the toilet from his bill. However, he still had a dessert on the bill. In the end, Stan left a 20 percent tip on the reduced bill, which amounted to $15."