Uncle GD what lessons you teach?

I'm sure you are a smoker.. Then during school hours how you control your urge to light a stick?
History and Geography. I smoked in the staff toilet!
Another school experience took place years later. Principal of school called police. Can't recall the exact reason why. Had to do with this student gangster. Together with my colleague, we attended to case. Arrived in school during recess time, all eyes on us. Spoke to principlal in his office. Another old-timer principal. Very friendly. Expressed frustration. Hard to discipline school kids. Was a secondary school.
Recess over. Can't recall how this student suddenly appeared outside office door of principal. Told principal I had to talk to this student in his absence. Principal left his office. Spoke nicely to this sia lan face student. He bohew. Maybe coz my colleague and I looked very decent. Machiam pastor?
I gave this student a good surprise by pulling his shirt collar in my direction and gave him 2 tight slaps. My collegaue joined in to jiak bak. Don't know where he hit. While being hit, this student miraculously knew how to say, 'sorry, sorry". He 'sorry", we 'knnbccb him". When all was in order, I went out and called the principal. He was nowhere to be found. He walked in later. The clerk must have told him I was looking for him. He thanked us for our intervention after I assured him 'all's settled'.
Knnbccb, a few days later, my boss summoned me and my colleague to his office. While walking towards office, was wondering if boss had 'tio' in the evening and wanted to 'jio' us. Knocked his door, went in. He shook his head even though shake head wasn't the trend then. Told us teok complaint from boy's parents who went to MOE and had also lodged a police report.
Weeks later, I received a phone call. Wahlaneh, principal called me. Thought he sure kpkb why we hamtam his student. What he said touched me deep deep man. He told me he was called to assist in police investigation and assured the investigator no assault took place because while he left his office, he was looking in to his office from the outsode via the glass panel and therefore there was no way his student could have been assaulted. As to why there were missing buttons on the student's shirt, he explained that the said student always got into fights or could have done it himself to sabo the police.
No further action was taken against my colleague and I.
Some months later, my colleague from another department called. Asked me about the school incident. Told me same boy with him. Arrested for gang related activities. I requested my friend to hamtam on my behalf!