Back the mid 90s at secondary school, a friend came back from holiday with a Casio CMD-40 TV remote control watch. It was like magic, no one had never seen anything like it before.

We pranked our history teacher so badly, changing the channels, volume and turning the TV off while we were supposed to be watching some video on Henry VIII or something (no idea, too busy PMSL).

We'd pass the watch round the class to keep em guessing.

In the end, school replaced ALL the TVs and were seriously pissed off, to this day I believe they had no idea it was us!