Only ever had one teacher who would twat you, Mr O'hare the physics teacher.
Would walk up behind you and give you a dig in the back or shoulder for talking or pissing about.
Was one of the better teachers tbf and most people passed his class, the other physics teacher uses to get the piss ripped out of him and ignored, but everyone like O'Hare, in fact if I recall we would have competitions to see if you could wind him up enough to get a proper slap round the head or a dead arm off him, was nicknamed sheep shagger for his wool like hair, so a few baa baa from the back use to do the trick.
Last I heard he was made to retire as his methods were no longer suitable
Then we had a crazy old woman teaching english, she would flick you with a ruler if not paying attention a german teacher who's car back seat was full of porn and spent most of the time perving, and a chemistry teacher who had a still of some kind which he used to show chemical reactions (but was probabaly making home brew).
The head master was a devout catholic and would scream down your ear with his megaphone if caught going chippy or blaspheming.
God I loved school.