Chalk chuckers.

In his youth, Mr Smith's teachers were infamous for one thing and that was chucking chalk at you in class if they heard talking whilst they were scribbling on the blackboard.

But apparently things have improved, "Only three of Scotland's 53,000 primary and secondary teachers were sacked on grounds of incompetence last year despite pledges by previous ministers to clamp down on poor performance in the classroom."

Mr Smith is reassured that there were only three bad teachers in all of Scotland's schools and that they have now all gone, leaving no chalk chuckers. On the other hand he probably thinks that the three teachers sacked were the unlucky ones who's incompetence was so extreme that even their fellow professionals weren't prepared to put up with them anymore. No more chalk chucking then.