### Clue: Fool around thus, working with adults only just after (2,4,2)
### Answer: AS SOON AS 
 ### Explanation: Fool around thus, working with adults only just after (2,4,2)
**ASS** ("fool") *around* **SO** ("thus") + **ON** ("working") *with* **A**(dults), so **AS(SO-ON-A)S