APAD:Give him an inch and he will take a mile

Give him an inch and he will take a mile

This proverb refers to a situation where you show a little generosity to a person and they take advantage of that generosity by taking more than you have offered. An example of this type of situation would be, if a man were to loan his friend some money and allowed him a longer time than usual to pay it back, so the friend kept returning asking for more money and more time.