1. pay up
Today we are going to learn “pay up”. If you pay up, you give someone the money that you owe them or that they are entitled to, even though you would prefer not to give it.
(1). I bought your lunch yesterday… Pay up!
(2). We claimed a refund from the association, but they would not pay up.
2. break in
Another phrase is “break in”. If you break in something new, you gradually use or wear it for longer and longer periods until it is ready to be used or worn all the time.
(1). Don’t you need to break in your leather shoes before you take them on your vacation?
(2). When breaking in an engine, you should refrain from high speeds for the first thousand miles.