One that I use is: The longer a client doesn't pay (an invoice), the less likely they are to pay it. A twist on it is: The longer I've loaned a friend ____ (

One that I use is: The longer a client doesn't pay (an invoice), the less likely they are to pay it. A twist on it is: The longer I've loaned a friend ____ (e.g., money, a book, etc) the less likely I am to get it back.