1.   On the odd occasion the jollities would get out of hand and the fists would fly.

2.   A fist flew towards him on the screen, filled it as it made apparent impact and then vanished away.

3.   Furniture was smashed and fists flew in the most serious trouble at the Maze in recent months.

4.   Fists fly, sweat flies, laughter files.

5.   His fists flew if they had to.

6.   In some extreme cases, passengers drop all restraint and let their fists fly.

7.   Like the old days, Nunn let the still-quick fists fly.

8.   Minds will be racing and fists will be flying then.

9.   Sometimes, fists flew.