A. knock back
Feedback knock back - 1. to quickly drink some alcoholic drinks 2. to cost a fortune 3. to upset somebody.
go out - 1. to leave the house 2. to date with somebody 3. to stop working 4. to move abroad for earning money 5. to be old-fashioned.
knock around - 1. to hit a few times 2. to spend time without any aim 3. to travel 4. to discuss something.
fall about - to burst out laughing