Mr Pritchard, Latin teacher. Not so much a catchphrase (though I am sure he had them, and am struggling to remember), but a couple of affectations. First of all, there were his "impots". Short for "imposition", and typically a massive and mindless bit of work you got for failing a test. Failing, in his terms, being "getting less than 100%". So a typical import would be to write out the whole test - which could be 100 questions - once for each point lost.
His other was a total and flat reluctance to use the number 13. We'd (gently and good-naturedly) try to catch him out and get him to say it, and he'd - equally gently and good-naturedly - fail to do so, and say "12A" instead.
His other was a total and flat reluctance to use the number 13. We'd (gently and good-naturedly) try to catch him out and get him to say it, and he'd - equally gently and good-naturedly - fail to do so, and say "12A" instead.





I can't believe my school missed a trick on this! That was exactly the kind of pettifogging shit they loved, but I don't recall it happening...