'Give me five' can mean 'wait a few moments for me' ('five minutes' is an idiom meaning 'a short length of time'). It can also mean 'congratulate me'. Colleagues often congratulate each other by...
To be fired or cut off.
It means to concede defeat and stop trying.
This saying means for everyone to listen.
It's TO SPEND A PENNY. It means to urinate. In the old days, public toilets cost a penny.